Kongsberg EM 1002 Operator's Manual
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Kongsberg EM 1002 Operator's Manual

Kongsberg EM 1002 Operator's Manual

Hydrography multibeam echo sounder
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EM 1002
Hydrography multibeam echo sounder
Base version

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Summary of Contents for Kongsberg EM 1002

  • Page 1 Operator manual EM 1002 Hydrography multibeam echo sounder Base version...
  • Page 3 EM 1002 Multibeam echo sounder Operator manual -- Base version 850- -160977 / AA000 / 2- -52...
  • Page 4 Note Kongsberg Maritime AS makes every effort to ensure that the information contained within this document is correct. However, our equipment is continuously being improved and updated, so we cannot assume liability for any errors which may occur. Warning The equipment to which this manual applies must only be used for the purpose for which it was designed.
  • Page 5 Operator manual Sections This book is the Operator manual for the EM 1002 multibeam echo sounder. It describes how to use the various applications installed on the EM 1002 workstation. System description page 1 Operational procedures page 7 EM 1002 Launchpad and status display...
  • Page 6 EM 1002 / Base version Remarks References Further information about the EM 1002 system may be found in the following manuals: · EM 1002 Installation manual · EM 1002 Maintenance manual · Hull Unit Instruction manual The reader This operator manual is intended to be used by the system operator. He/she should be experienced in the operation of positioning systems, or should have attended a Kongsberg Maritime training course.
  • Page 7 Operator manual Document revisions Date Written by Checked by Approved by 19.02.98 17.09.99 21.09.00 30.08.01 01.10.01 (The original signatures are recorded in the company’s logistic database) 850-160977/E...

  • Page 8: Document History

    EM 1002 / Base version References (The information on this page is intended for internal use) Documents Sect Title Loc. File P.no/Rev Complete manual AA000 850--160977 Document history Rev.A First edition. Issued for approval. Rev.B Several minor corrections made throughout the manual to correct for SW changes.

  • Page 9: Table Of Contents

    ......... . Starting the EM 1002 .
  • Page 10 EM 1002 / Base version Closing down the EM 1002 ........
  • Page 11 ..........EM 1002 LAUNCHPAD & STATUS DISPLAY .
  • Page 12 EM 1002 / Base version Absorption Coefficient ........
  • Page 13 Operator manual Sound Speed Profile Input ....... . . SV & P Smart Probe Profile Input .
  • Page 14 EM 1002 / Base version Overview ..........
  • Page 15 Operator manual File ............Overview .
  • Page 16 EM 1002 / Base version Overview ..........
  • Page 17 Operator manual Activate line ..........Deactivate line .
  • Page 18 EM 1002 / Base version 15.2 Main window ..........
  • Page 19 Operator manual Introduction ..........Internal clock .
  • Page 20 EM 1002 / Base version Blank page 850-160977/E...

  • Page 21: System Description

    1000 m. The system is easy to install, even on small vessels. The EM 1002 has an accuracy surpassing the IHO standard, including the most stringent of the latest version, 4th edition.
  • Page 22 EM 1002 / Base version The EM 1002 is a complete system with all necessary sensor interfaces, real-time compensation for vessel motion and raybending, data displays for quality control including sensor calibration, and data logging included as standard. Postprocessing software is available for both for bathymetry and seabed classification.
  • Page 23 System description Interfaces: Sound Speed Sensor Tide Operator Station Center depth output Not included in standard EM 1002 delivery External ethernet Serial interfaces: Positioning systems Attitude (roll, pitch and heave) Transceiver Unit: Heading - Controller Clock - Receiver Datum heights...
  • Page 24 Hull Unit Control - Controller - Motion Interface - Receiver - Motion Processor - Transmitter - Servo Amplifier Hull Unit Relay Unit Junction Box Local Control Unit Transducer (CD4631/GIF) Figure 2 - EM 1002 with hull unit - simplified system diagram 850--160977/E...

  • Page 25: System Units

    ® The EM 1002 system units are shown on page 3. ® The EM 1002 hull unit system units are shown on page 4. Transducer array The EM 1002 Transducer Array is used both for transmit and receive. It is semicircular with a radius of 45 cm and 160° angular extent and its weight in water is about 90 kg.

  • Page 26: Operational Procedures

    Kongsberg Simrad EM 1002 multibeam echo sounder. The EM 1002 is operated in on-line or off-line mode. · The on-line mode is used during the survey. The applications are then used to control the multibeam echo sounder, to store the data, and to present various views of the data for quality assurance.

  • Page 27: Operational Summary

    Operational procedures Operational summary To start the EM 1002 system, follow this procedure: Power up the system. ® Refer to page 8. Log in. ® Refer to page 8. Start the EM 1002 application. ® Refer to page 9. Check the installation parameters.

  • Page 28: Starting The Em 1002

    When the boot process is finished, the display presents the log-in dialogue box: Welcome to [host name] Enter your user name: em1002 Press <Enter>. When this log-in is completed, the system presents the EM 1002 log-in dialogue box: Welcome em1002 Enter your password: simrad0 Press <Enter>.

  • Page 29: Launchpad Introduction

    You can select either one of these on the Launchpad, or in the CDE dialogue box. Launchpad introduction The EM 1002 Launchpad is the control dialogue box for the EM 1002 on-line operations. This utility provides realtime monitoring of the storage capacity, sounder parameters and sensor status. It also contains buttons to start and stop the echo sounder and the logging, as well as controls to select the active workspace.

  • Page 30: Calibration

    This hardware set-up is described on page 24. Calibration To ensure maximum reliability and accuracy from the system, the EM 1002 and externally connected sensors should be calibrated before the start of a new survey. ® A calibration procedure is described on page 254.

  • Page 31: Installation And Runtime Parameters

    Operational procedures Installation and runtime parameters This section discusses parameters that may need changes from survey to survey. It is recommended that the installation parameters are always checked. A list of these parameters and settings should be kept in a safe and accessible place. Installation parameters ®...

  • Page 32: Sound Speed Profile Retrieval

    EM 1002 / Base version Open the Installation Menu dialogue box. Locate the Sensor Location field, and check the Water Line value. Modify if required. Close the Installation Menu dialogue box. Sound speed profile retrieval In order to ensure accurate data, you must know the sound speed profile in the survey area.

  • Page 33: Maximum And Minimum Depth

    Locate the Sounder Main field where the minimum and maximum depths are entered. Enter the two depths to create a “depth window” wide enough for the EM 1002 to track correctly. ® The maximum and minimum depth settings are described on page 116.

  • Page 34: To Start "Pinging

    On the EM 1002 Launchpad: press the Start button. - The echo sounder will now start transmitting. Check the external sensors Proper operation of the external sensors are vital for the EM 1002 operation. Check that the system’s external sensors are switched on.

  • Page 35: Identifying Survey And Operator Names

    · Survey name: Enter the name of the new survey. You can use maximum 30 standard alphanumerical characters. · Comments: · Clock synchronization: Click to set the EM 1002 clock to the synchronization source chosen in the Installation Menu. ®...

  • Page 36: To Prepare Logging

    · Planned Line ID This identifier may for example be used to tie line no to any other line identifier. To prepare logging You can log the raw data and survey-data to disk. Select Options on the EM 1002 Launchpad main menu. 850-160977/E...

  • Page 37: To Export Data

    You should only disable it if you are using other display software for online quality control than the geographical displays provided with the EM 1002. Otherwise logging of survey data should only be disabled if disk space is critically small.

  • Page 38: Running The Survey

    Stop the logging at the end of each line and start it again at the beginning of the next At the start of every survey line: Select Start log on the EM 1002 Launchpad. - The logging starts. Sounder & Logging...

  • Page 39: To Monitor The Progress

    · Sensor data values · Available disk space Visual quality assurance with the Survey Display The Kongsberg Simrad EM 1002 echo sounder system includes the Survey Display application for visual quality control of the survey. ® The basic operational procedures for the Survey Display is presented on page 55.

  • Page 40: File Backup, Deletion And Restore Procedures

    EM 1002 / Base version File backup, deletion and restore procedures Your system may run low on media resources during the survey; the tape or disk may be filled faster than you planned. When the system runs low on media resources, the appropriate warnings are given.
  • Page 41 Operational procedures · 3. Select Raw Data or Survey Format in the File Type menu. A list of available files (surveys) for the selected file type is presented in the Files list at the bottom of the window. · 4. Select one or more surveys from the list. A survey may be deselected or removed from the list of selected items by reselecting the item.

  • Page 42: Closing Down The Em 1002

    EM 1002 / Base version Closing down the EM 1002 Software Method 1 Exit the EM 1002 by selectingthe Exit alternative on the File menu. You will then see a dialogue box in which you can choose how to close down the system. ®...

  • Page 43: Hardware Units

    The EM 1002 Operator Station is powered down first. Locate the unit’s mains switch, and switch off. Switch off all the peripherals. Tranciever Unit Open the door on the EM 1002 Tranciever Unit, and switch power off, or use the remote power switch. 850-160977/E...

  • Page 44: Initial Setup

    However, new software versions may become available as updates, and these will usually be shipped on CD ROM. The necessary instruction required to update the EM 1002 software is included on the CD ROM. This applies for all EM 1002 units. To access the basic installation parameters...

  • Page 45: To Change The Password

    Unauthorized and erroneous modifications may degrade the accuracy of the survey results. To change the password You can change the password that protects the EM 1002 installation parameters. Access the Installation menu. Select Edit on the main menu, and then Edit enable.

  • Page 46: To Define The Position Delay

    To define the position delay The accuracy of the position sensor is vital for the EM 1002 data accuracy, and it is therefore important that the relative timing of vessel position data and system depth data is correct. To define the “age”...

  • Page 47: To Define Sensor Offsets

    This is described on page 126. To define the Operator Station interfaces The EM 1002 Operator Station is equipped with at least two serial interfaces. These are normally set up to receive data from the EM 1002 sound speed probe located at the transducer’s depth, a sound speed profile from an external computer or tide data input.
  • Page 48 EM 1002 / Base version Note: This is the clock in the EM 1002 Processing Unit and not the clock on the Operator Station. Access the Installation menu. - A dedicated field is available with all the necessary parameters. ®...

  • Page 49: Unix, Motif And Cde Information

    This chapter is intended for those not familiar with the UNIX operational environment. The Operator Station used for the Kongsberg Simrad EM 1002 is a UNIX Workstation. It uses basic commercial software tools following industrial standards. These include a Motif...

  • Page 50: Mouse And Window Operations

    The following is a description of the Motif window system, and how you can interact with it. The items discussed here are of a general nature, and apply to all of the Kongsberg Simrad EM 1002 applications. Details can be found in the following publications: ·...
  • Page 51 Operational procedures Window menu button Menu bar Title bar Minimize and Maximize buttons Title bar ptions indow (CD3388) Scroll bar and Slider Client area Figure 10 - A Motif Window (example) Title bar - The horizontal bar along and below the upper window frame containing a text;...
  • Page 52 Client area - The area within the borders of a window’s frame that is controlled by an application. In most EM 1002 applications, this area may also be referred to as the Survey area or Geographical area.
  • Page 53 Operational procedures Unoccupy workspace - Use this option to delete the window from the current workspace. Close - Use this option to close the window. Note that some applications may have disabled this function. Window manipulation The windows can be manipulated in several different ways to suit your needs and personal preferences.
  • Page 54 Middle mouse button - The middle mouse button activates the menu to start up the Kongsberg Simrad applications. Right mouse button - The right mouse button activates utility software to extract screen or window dumps to a file on the home directory, or to a system printer.
  • Page 55 · Text fields · Lists · File selection boxes. The following types are used by the Kongsberg Simrad EM 1002 software. Option button This is a special type of push button containing a small rectangle on the right hand side. When pressed, a limited set of options will be displayed.
  • Page 56 EM 1002 / Base version File selection box Whenever a file is selected for reading or writing, a file selection box will be displayed. “Tear-off” menus The Tear-off menus are indicated by their perforation look-alike line at the top of the pull-down menu.

  • Page 57: Common Desktop Environment (Cde)

    Operational procedures Common Desktop Environment (CDE) Front panel The Common Desktop Environment (CDE) supplies you with tools and commands to organize and navigate among the active programs. The central facility in this environment is the Front panel (of which a part is shown below) which is usually situated along the lower edge of the screen.
  • Page 58 EM 1002 / Base version When operating the EM 1002 system, you can also choose between the workspaces on the Launchpad. 850-160977/E...

  • Page 59: Common Kongsberg Simrad Functions

    Operational procedures 2.11 Common Kongsberg Simrad functions Introduction The following paragraphs describe a number of common functions and dialogue boxes used throughout the Kongsberg Simrad EM 1002 applications. The following subjects are covered: · Geographical areas ® Please refer to page 40 ·...

  • Page 60: Geographical Areas

    A “geographical area” is a window where the client area represents a geographical area. This area is used to display maps, survey lines, and so on. Throughout the EM 1002 documentation these windows are also referred to as “survey area” or “client area”.

  • Page 61: File

    Operational procedures File Overview This window appears whenever it is required to open a new file or save an existing file. It provides a list of all the available files in the current directory, and allows you to move up and down the directory structure.
  • Page 62 EM 1002 / Base version The following wildcard characters are accepted: * (representing any sequence of characters) ? (representing any single character). The files conforming to the filter are shown in the list box to the right. The filter is activated by pressing Enter on the keyboard or by clicking on the Filter button at the bottom of the dialogue box.

  • Page 63: Plot

    Operational procedures Plot Overview Selecting this common command brings up two dialogue boxes, one after the other. · In the first dialogue box you select the area to print, the scale and the geographical projection. · In the second dialogue box, you select output format and medium.
  • Page 64 EM 1002 / Base version If View is selected, only the part of the survey area currently visible in the window will be printed. Scale This command is used to set the scaling method used for the plot. Optimize to media will set the scale so that the full paper area will be used for the plot.
  • Page 65 Operational procedures Second dialogue box ® The second print dialogue box is shown in figure 14. Figure 14 - The second Print dialogue box Format This command is used to select the printer format. · Postscript level 1: For PostScript black/white printers ·...
  • Page 66 EM 1002 / Base version Selecting File will result in a print file containing the printer commands. The file name must be defined in the text input field below the radio buttons. You must then take manual action for further operations on the file.
  • Page 67 Operational procedures Acceptance OK - Press the OK button to close the dialogue box and start the actions defined in the dialogue box. Cancel - Press Cancel to close the dialogue box without printing. Help - Press Help for online guidance. 850-160977/E...

  • Page 68: Tool Bar

    Tool bar The buttons on the tool bar are general tools for scaling, mouse operations and panning. These tools are available in several of the Kongsberg Simrad EM 1002 software applications using geographical presentations. Undo Reset zoom to initial view...
  • Page 69 Operational procedures · When the +1 button is selected, the scaling factor will be moved up and down a list of normal scaling factors; from 1:10 up to 1:750.000 and 1:10.000.000. · When the *2 button is selected, the scaling factor will be the double or half of the previous scaling factor.

  • Page 70: View Procedures

    EM 1002 / Base version View procedures To change annotation colours You can change all the display colours used in the main window. This includes background, grid lines, survey lines etc. Select View on the main menu bar. Select Annotation colours on the drop-down menu.
  • Page 71 Operational procedures - The Lat/Long dialogue box appears. It contains a list of the alternatives. Click on the button to the left of the alternative you wish to use. Click OK to apply and exit. ® The Lat/long dialogue box is described on page 209. To define the colours to be used Colour use must be defined when survey data is displayed as a continuous data set.

  • Page 72: Special Mouse Operations

    EM 1002 / Base version Special mouse operations Overview The mouse plays an active role when you use the geographical windows. In addition to the usual left mouse button functions for pressing buttons and menu selections, the middle and the right mouse buttons are often used.
  • Page 73 Operational procedures Drag select For some of the geographical windows a part of a segment can be selected by using the drag select method: Press the Ctrl key and hold it down. Position the mouse pointer at the segment in the geographical area.
  • Page 74 EM 1002 / Base version - The value will be displayed until the next time the geographical window is redrawn. Information text field below the geographical area The right text field below the geographical area can display information about a segment in the geographical area. Typical information displayed here includes coordinates, line name, region name, etc.

  • Page 75: The Survey Display And The Graphical Utilities

    “host” for the other graphical utilities incorporated in the EM 1002 system. The Survey Display is automatically started when the EM 1002 is powered up for on-line operations. If it is accidentially stopped during the survey session, it can also be started manually from the EM 1002 Launchpad.

  • Page 76: Ping Display

    ® The Ping Display is described on page 162. If you have accidentally stopped the utility during the session, you can restart the Ping Display from the icon on the EM 1002 Launchpad. ® Additional operational procedures for the Ping Display are found on page 169.

  • Page 77: Bridge And Helmsman Display

    Select which display you wish to address the Bridge Display Select Processing -> Bridge Display on the main menu. You can also start the Bridge Display from the EM 1002 Launchpad. Note that the Survey Display utility must be active before you can start it.

  • Page 78: The Planning Module

    ® Seabed Viewer is described in detail on page 313. You can start the utility as described here. Click the Seabed Viewer icon on the EM 1002 launchpad. Note: The Seabed Viewer will be updated independently of the workspace!

  • Page 79: Ssp Editor

    ® The utility is described on page 321. The SSP Editor is started from the EM 1002 as follows: Click on the icon on the EM 1002 launchpad. Identify the profile you wish to work on.

  • Page 80: Survey Planning

    Sidelobe detections should however be very rare in the EM 1002 due to the advanced signal processing implemented. Note that if circumstances require that survey lines...
  • Page 81 A sound speed profile should always be taken in the surveying area and loaded into the EM 1002 before the survey is started. In some areas the profile will vary, mostly due to fresh water inflows from rivers or currents from areas with different salinity.

  • Page 82: System Self Test

    The BIST is described in detail on page 145. To run off-line BIST tests The BIST self test on the EM 1002 system is controlled from the BIST window described above. Open the BIST window as described in the previous sequence.
  • Page 83 The test result messages are displayed in the text field at the bottom of the dialogue box, and can be printed and/or saved as described above. More about the BIST files can be found in the System Administration chapter in the EM 1002 Maitenance Manual. 850-160977/E...

  • Page 84: Em 1002 Launchpad & Status Display

    Introduction The purpose of this chapter is to provide detailed information about the commands and parameter settings in the EM 1002 echo sounder operation dialogue boxes. It thus presents all the windows, icons and boxes associated with the operation of the EM 1002 multibeam echo sounder software.

  • Page 85: The Launchpad

    Status Display. Status Display. Figure 16 - The EM 1002 Launchpad The EM 1002 Launchpad is used to monitor the status of the EM 1002 system during on-line operation, and to start the various applications used to perform specific tasks.
  • Page 86 EM 1002 / Base version ® Layout & Configuration, (page 92) ® Options, (page 95) The Help command provides on-line help for the system. It is regarded as self-explanatory, and it is not described here. 850-160977/E...

  • Page 87: Operator Station

    Launchpad and Status Display Operator Station This group provides you with the status of your remaining disk space, and the current load in percent. The information is dynamic, and continuously updated. If you click on the Operator Station... button, the Status Display dialogue box will be displayed with the Operator Station parameters in view.

  • Page 88: Echo Sounder

    EM 1002 / Base version Echo sounder This group provides you with the status of a selection of the current system parameters. The selection is defined by the choices you make in the Sounder Status Configuration... dialogue box accessed from the Layout & Config menu.
  • Page 89 Launchpad and Status Display The information is dynamic, and continuously updated either from the last recorded ping, or once per second. If you click on the Echo Sounder... button, the Status Display dialogue box will be displayed with additional echo sounder parameters in view. ®...

  • Page 90: Sensors

    EM 1002 / Base version Sensors... This group provides you with the status of your current sensor parameters. The information is dynamic, and continuously updated. The selection is defined by the choices you make in the Sensor Status Configuration dialogue box accessed from the Layout &...

  • Page 91: Sounder & Logging

    Launchpad and Status Display Sounder & Logging This group provides you with four buttons to control the main EM 1002 echo sounder functions. The group may appear in two variations, one with Start in the top left button, and one with Simulator in the top left button. The variation shown here is presented during normal operation, while the other is shown when the Simulator is enabled.

  • Page 92: Workspace

    EM 1002 / Base version Workspace This group allows you to select which of the four workspaces you need displayed. These buttons perform the exact same functions as the four buttons in the Common Desktop Environment (CDE) window. Workspace Survey...

  • Page 93: Programs

    Launchpad and Status Display Programs The options in the Programs group allow you to start a number of individual programs. Bridge Echo Ping Display Sounder Display Survey Seabed Programs Display Viewer Sound Workstation Singlebeam Speed Data Profile (Serial & Distribution Editor Network) Grid...
  • Page 94 EM 1002 / Base version · Grid Display ® Grid Display: page 226 · Sound Speed Profile Editor ® Sound Speed Profile Editor: page 321 · Setup for Echo Sounder ® Setup for Echo Sounder: page 111 · Workstation I/O (Serial & Network) ®...
  • Page 95 Launchpad and Status Display Maximize - Select this option to restore the program window into its previous size. Restore layout - Select this option if you wish to restore the layout of the program window to the default. Terminate - Select this option to stop the program. Enable Auto restart - Select this option to enable the program to restart automatically if it accidentally terminates.

  • Page 96: Survey

    EM 1002 / Base version Survey The Survey field is shown below. Survey: Horten_Havn Line... (CD5630) Figure 23 - The Survey group This field allows you to select the current survey. The field also provides you with the current line number.
  • Page 97 Launchpad and Status Display Line... This is the current line number if logging is on (active), or the next line number if logging is off. To enter parameters for the line to be logged, click Line... to open Line Setup dialogue box. Line Setup Comments: Clear Comments...
  • Page 98 EM 1002 / Base version Enter a string New operator: No Name Help Cancel (Cd4413) Figure 25 - String entry dialgoue box for operator identification 850-160977/E...

  • Page 99: File

    ® The Storage Location dialogue box is described on page 89. The Exit command presents you with different choices for exiting the EM 1002 launchpad. ® The Exit command is described on page 91. 850-160977/E...
  • Page 100 You can perform dedicated actions on all the files generated for or by the survey. More about the file types and their location is presented in the System Administration chapter in the EM 1002 Maintentance manual. File Admin...
  • Page 101 These files are the most important files collected during a survey. If you accidentally loose your survey data format files (required in the geographical displays in the Kongsberg Simrad postprocessing software), you can recreate these files based on the raw data files.
  • Page 102 EM 1002 / Base version Delete - This selection will delete the files chosen by you. When selecting files for delete, the file related information is shown below the list, as well as the total size of selected files. When you press the Apply button, a confirmation dialogue appears, and you are asked to verify the deletion.
  • Page 103 Launchpad and Status Display Generate tape TOC - This option produces a tape Table Of Contents (TOC), and you may use this TOC for later retrieval of one or more files from this tape. When this command is selected, an input dialogue appears, and you may supply a name to be associated with the TOC.
  • Page 104 EM 1002 / Base version Tape Options This field is a part of the Tape field, and it is only available if the Tape field is enabled. The three option buttons control the behaviour of the tape when you record or play back data.
  • Page 105 Launchpad and Status Display Print / View Purpose This dialogue box is used to visualize the various settings made automatically by the EM 1002 system and/or manually by you. ® Please refer to figure 27. Print / View Output Function...
  • Page 106 ® For more information about the survey files, refer to the System Administration chapter in the EM 1002 Maintenance manual. Survey Logfile - Click here if you wish to see the survey logfile. Survey Parameters - Click here if you wish to see the survey parameters.
  • Page 107 Launchpad and Status Display (Cd4395) Figure 28 - Runtime setup seen in a window, example. 850--160977/E...
  • Page 108 MMDD = current month and date HHMM = current hour and minute The file will be located under $HOME/.eso_system . ® Further information about the EM 1002 file system is provided in the System Administration chapter in the EM 1002 Maintenance Manual. 850-160977/E...
  • Page 109 ® An overview of the file types and their default location is presented in the System Administration chapter in the EM 1002 Maintenance Manual. The dialogue box is split in five parts; four are used to control the locations of the file types, while the fifth allows you to navigate on the system hard disk.
  • Page 110 EM 1002 / Base version Shared Data The text box is used to identify the preferred location of the Shared Data files. Enter the folder identification directly, or use the Location Selector to navigate. Press the Set Location button to apply.
  • Page 111 Launchpad and Status Display Exit This final choice on the File menu allows you to exit the EM 1002 launchpad. You are presented with three choices. All will first check if the echo sounder is still running, and if a survey is in progress.

  • Page 112: Layout And Configuration

    EM 1002 / Base version Layout and configuration Overview The layout of the EM 1002 windows and the way they are positioned within the four workspaces may be saved into individual files for each system operator. One factory default configuration is also available.

  • Page 113: Sounder Status Config

    Launchpad and Status Display Sounder Status Config... To access the Sounder Status Configuration dialogue box, choose the Sounder Status Configuration choice on the Layout & Config menu on the Launchpad. Figure 30 - The Sounder Status Configuration dialogue box Each box in the Launchpad’s Echo Sounder group displays selected system status parameters.
  • Page 114 EM 1002 / Base version Sensor Status Configuration This command opens the Sensor Status Configuration dialogue box. Sensor Status Configuration Sensor Status Fields Each menu below corresponds to an item in the Sensor Status area in the Launchpad. Use ‘Layout & Config ->...

  • Page 115: Options

    Launchpad and Status Display Options Overview The Options menu contains the following choices: · User preferences · Logging · Datagram subscriptions The options in the User preferences dialogue box allows you to define certain alarms and default settings. ® Refer to page 96. The options in the Logging dialogue box allows you to select which data you will log to disk, and select optional datagrams to be logged.
  • Page 116 EM 1002 / Base version User preferences Purpose This dialogue box allows you to make a number of default settings to your echo sounder. The modifications you do are implemented immediately. User Preferences Lat./Long. Display Format: 60.333 Sound Speed Max. Offset:...
  • Page 117 Launchpad and Status Display ® Refer to Datagram subscriptions on page 99. Sensor Audible Alarm This option enables the audible alarm for missing sensor input. When the system does not log, these alarms are only issued to the Status Display as a warning, but as soon as logging is activated, the alarm switches to an error situation which defaults to use a audible signal.
  • Page 118 · Seabed Image (must be chosen for Sonar Image to display properly) ® Refer to Seabed Image datagram information in the Datagram Formats chapter in the EM 1002 Maintenance Manual. · Central Beams ® Central Beams is not implemented for EM 1002.
  • Page 119 · A non-periodic subscriber may select to receive one or more of the datagrams in the Datagrams list (to the right). Every datagram of the specified type issued by the EM 1002 will be sent to the subscriber. · A periodic subscriber may only receive the installation and sound speed datagrams.
  • Page 120 EM 1002 / Base version Figure 34 - The Datagram Subcriptions dialogue box ® Refer to page 96 for a description of the User preferences dialogue box. If the periodic user has selected one or more of the periodic datagrams, the system automatically enables the periodic timer. If you de-select all the periodic datagrams, the periodic timer is deactivated.
  • Page 121 Launchpad and Status Display The IP Addresses list is maintained with a set of commands available from the IP addresses Options menu directly below the list. These commands are: · Add IP address · Remove IP address · Modify IP address There are no restrictions for adding IP addresses.It is not possible to Remove or Modify an address that is used by one or more of system programs.
  • Page 122 EM 1002 / Base version · Add - Define a new IP address to be used by the system. · Remove - Delete an existing IP address · Modify - Change an exisiting IP address to another value. IP Port no.

  • Page 123: Status Display

    Launchpad and Status Display Status Display Overview The EM 1002 Status Display is brought up if you click on any of the following “name buttons” in the EM 1002 Launchpad: · Echo sounder... · Operator Station... · Sensors... Once up, the Status Display will automatically bring the selected information into view.
  • Page 124 TRU OK - Feedback from the Built-In Self Test (BIST) system with he current operational status of the EM 1002 Transceiver Unit/Processing Unit. The field is green when all is OK, and red when there is no contact.

  • Page 125: Operator Station

    This may come from a sensor, from the sound speed profile, or can be set manually. Current profile - File name to identify the current sound speed profile used by the EM 1002 system. Operator Station Introduction The Status Display for the Operator Station is shown on page 106.
  • Page 126 Raw to Disk is always enabled. The Survey Format to Disk should normally be on, as the program’s geographical displays require these data to be functional. ® Further information about the raw and survey datagram formats are found in the Datagram Formats chapter in the EM 1002 Maintenance Manual. 850--160977/E...
  • Page 127 Storage Locations & Remaining disk space These fields display the current storage locations for the various named files and the remaining disk space on the EM 1002 Operator Station and/or the peripheral logging devices. If all files are logged on the same disk or disk partitions, the values presented are identical.

  • Page 128: Sensors

    EM 1002 / Base version Sensors Introduction This part of the Status Display presents current information about the sensors. Sensors Input Status Sensor Data Time: Pos. Port 1 Roll: Pos. Port 3 Pitch: Pos. Port 4 Heave: Heading: Attitude No. Of Sat: Heading Pos.
  • Page 129 Launchpad and Status Display No. of Sat - The actual number of positioning satellites curently detected by the positioning system Pos (H)DOP - The current HDOP (Horizontal Dilution Of Precision) value from the positioning system. Pos. Quality - This is an indicator for the relative accuracy of the current position.

  • Page 130: Em 1002 Operation Menus

    Access The Runtime Menu dialogue box is started automatically when the EM 1002 is started, and it is by default placed in MBES Workspace. If you close it by accident during a logging session, you can restart it by clicking the icon in the Program group on the EM 1002 Launchpad.

  • Page 131: Organization And Main Menu

    Organization and main menu Purpose All setup for the EM 1002 is accessed through the Runtime Menu dialogue box. The purpose of the Runtime Menu dialogue box is to allow you to modify the parameters used by the EM 1002 multibeam echo sounder during operation as conditions change.

  • Page 132: Show

    EM 1002 / Base version Once the system is enabled to accept changes to the operation parameters, you are prompted with a small window to select a setup file. Save... Use this option to save all the current operating parameters on the system’s default user setup file.

  • Page 133: Runtime Menu

    Operation menus Runtime Menu Overview The Runtime Menu is available by default. Figure 38 - The Runtime menu dialogue box 850--160977/E...

  • Page 134: Sounder Main

    · force a desired depth Figure 39 - The Sounder Main field EM 1002 Ping mode This parameter defines the operational mode of the EM 1002 multibeam echo sounder. You can select any of the following settings: · Auto · Shallow...

  • Page 135: Sector Coverage

    Operation menus · Medium · Deep During normal operating conditions, you are advised to set the ping mode to Auto. The system will then automatically use the most appropriate mode, and - if necessary - switch between the modes to obtain maximum coverage. Sector Coverage This parameter specifies the level of filtering of the heading.
  • Page 136 EM 1002 / Base version In-between - Earlier the equiangle beam spacing was recommended for seabed imaginery. However, the very few soundings on the edge of the swath reduced the accuray of the imaginery positioning, and makes them not so good for bathymetry.

  • Page 137: Sound Speed

    Sound Speed Profile The Sound Speed Profile parameter allows you to select the sound speed profile to be used in the EM 1002’s depth calculations. These calculations are based upon ray bending theory, and the importance of a correct sound speed profile can not be underrated.

  • Page 138: Sound Speed At Transducer

    From Profile The system will use the active sound speed profile to derive the sound speed near the EM 1002 Sonar Head. If no matching depth is found in the profile, an interpolated value is used. From Sensor The readout from the specific sensor is used.
  • Page 139 Operation menus Note: When a new profile is taken into use, always set the offset so that the sensor value is the same as that in the profile at the transducer depth. This is most easily done by switching between deriving the sound speed at the transducer depth from the profile and from the sensor as the offset is changed.

  • Page 140: Filtering

    EM 1002 / Base version Filtering Overview There is always a small risk of false detections in a multibeam echo sounder. This is due to external factors such as fish shoals, acoustical interference from other systems, passing over vessel wakes, etc. According to bottom conditions, you can apply the included filters to assist the system in discriminating against erroneous measurements.
  • Page 141 Slope With this filter enabled, the EM 1002 system checks for bottom slopes that tilt inwards. These slant towards the vessel, and they are removed because the filter requires that the athwartships distance increases for every beam from the centre.

  • Page 142: Absorption Coefficient

    Selecting a large range gate may reduce the ping rate slightly when operating in shallow waters. The EM 1002 transmitter operates with three pulses within each ping when the coverage exceeds 100 degrees. This setting will turn on an automatic gain compensation to avoid gain steps between these sectors.

  • Page 143: Seabed Imaging

    Auto. HI / LO frequency ratio Because the EM 1002 uses two different frequencies (93 and 98 kHz), the absorption coeffisient will vary slightly (for example 30 db/km for 93 kHz, 31.2 db/km for 98 kHz). The ratio of the HI/LO frequencies is to be set in this field.

  • Page 144: Installation Menu

    EM 1002 / Base version Installation Menu Overview The Installation Menu is accessed from the Runtime Menu dialogue box by selecting Installation Parameters from the Show menu. The Runtime Menu is started automatically when the echo sounder is started, but you can also open it from the Launchpad.
  • Page 145 Select Read to open the current set of previously defined parameters saved on the hard disk. Before you can read this setup file, you need to enable the EM 1002 to accept changes. To do this, select Edit on the menu bar and choose Edit enable. See below for further information.

  • Page 146: Tru Input Interfaces

    This option provides on-line documentation. TRU Input Interfaces Overview The EM 1002 Transceiver Unit is equipped with four serial ports to interface external time critical sensors. These parameter settings allow you to select which sensors are connected to the various ports.
  • Page 147 Operation menus TRU Input Interfaces Input On: Port 1 None Even 1200 2400 4800 9600 19200 Reset Selections Simrad90 Positions GGA Positions GGA - RTK Positions GGK Positions GST Pos. Quality NMEA 0183 DBS Depth NMEA 0183 DPT Depth Height HDT Heading ZDA Clock (CD4353EB)
  • Page 148 · MK39 (only on Port 3) · Motion sensor 2 (only on Port 3) · SKR Gyrocompass (only on port 3) Refer to EM 1002 in chapter Datagram Formats in the EM 1002 Maintenance manual for a description of these formats. 850--160977/E...

  • Page 149: Positioning Systems

    Operation menus Positioning Systems Overview You can connect three positioning systems to the EM 1002 multibeam echo sounder, but only one of them can be active at any one time. One positioning system may be connected on Ethernet instead of serial line. For each of these positioning systems, you need to define certain basic parameters.
  • Page 150 - the input datagram’s time stamp may be used. However, it must then be assumed that the EM 1002 and the positioning system clock are both synchronized with the 1PPS signal, and that any time difference between the two clocks are entered as a position delay.

  • Page 151: Active Systems

    Operation menus Datum This parameter enables you to select which datum the positioning system uses. The datum specific parameters are also shown in the window. These describe the ellipsoid that defines the datum. · Major Axis · Flattening Active Systems Active Positioning System On This selector button is used to choose which positioning system you wish to use as the active positioning system.

  • Page 152: Motion Sensor

    EM 1002 / Base version Figure 47 - Active Pos. Filtering Motion Sensor Overview The motion sensor is presumed to measure the vessel attitude of some specified point on the vessel. The sensor must thus be aligned with the vessel, not the system’s transducer(s). Any angular transformations required due to the transducer(s) not being aligned parallel with the vessel’s forward axis will be done by the system.
  • Page 153 Operation menus Offset Angles Roll Offset (deg) This setting is used to set a correction offset for roll values received from the Motion Sensor. The offset will be added to the roll values received from the Motion Sensor. If the roll offset is found using the system’s built-in calibration utility it should be applied without any change of sign.

  • Page 154: Stand-Alone Heading Sensor

    POS/MV (the Tate-Bryant convention). Stand-Alone Heading Sensor Overview The EM 1002 system must have access to the vessel’s current heading. The data may be received from the motion sensor, or from another sensor (for example a gyrocompass or a dual GPS reciever system).

  • Page 155: Clock

    Operation menus Clock Overview The EM 1002 system has an internal clock with 1 millisecond resolution. This clock is used to time stamp all logged data. The drift of the internal clock can be several seconds per day. The clock may be synchronized to an external 1 pulse per second (1PPS) signal.

  • Page 156: Misc. External Trigging

    Misc. External trigging This option enables external trigging of the EM 1002 echo sounder system. Figure 51 - External triggering More about the External Triggering can be found in the EM 1002 Maintenance Manual. Sensor Location Overview In order to make accurate measurements, the EM 1002 must know the physical location of all the sensors and its own transducers.
  • Page 157 Operation menus Figure 52 - Sensor Location The position data you define here may however not necessarily always be the physical location of the antenna. This is because settings in the positioning system’s own software can redefine the location of the antenna. The XY values of the soundings are referred to the location of the active positioning system, and it is this “virtual”...

  • Page 158: Installation Angles

    Figure 53 - System Parameters Hull Unit included The EM 1002 may be supplied with or without a hull unit with mechanical pitch compensation. Set Yes or No here as applicable with your system. Tilt Offset (deg) This setting is used to compensate for a fixed tilt setting of the hull unit.
  • Page 159 Outer beam angle offset The pointing angles of the outer beams of the EM 1002 depend on the sound speed of the transducer coating material. This parameter will allow you to add a correction for this effect. The value may...

  • Page 160: Manual Control

    EM 1002 / Base version Manual Control Overview The Manual Control options are available on the Test, Simulator and Manual Control dialogue window. Using the Manual Control options, you can overrun several of the parameters set automatically by the echo sounder. We strongly...

  • Page 161: Manual Control

    Manual Control Tracking This setting is used to control the bottom tracking method used by the EM 1002 system. The available options represent different degrees of automatic control. Bottom tracking requires good estimates of the ranges to the bottom and bottom backscattering strength which again are used to set the system gain.
  • Page 162 TX Power You can set this parameter if you need to reduce the output power from the EM 1002 system. The normal setting is Full, you can reduce it to -10dB or -20dB. This value is used only if Tracking is set to Manual or Range only.

  • Page 163: Simulator

    The simulator is located in the Sonar Head, and when runnning, it will test most of the EM 1002. Only the transmit and recieve part will not be tested. If the sound speed profile is different from the transducer depth sound speed, the bottom will be curved.
  • Page 164 EM 1002 / Base version Slant Across - Change this parameter to modify the across slant angle of the simulated bottom. 850-160977/E...

  • Page 165: Built-In Self Test

    Operation menus Built-In Self Test Overview The Built-In Self Test options are available on the Test, Simulator and Manual Control dialogue box. To access this box, select it on the Show menu in the Runtime Menu menu bar. The Built-In Self Test options provide a number of automatic tests that may be started to check the operation of the echo sounder system.

  • Page 166: Bist At Startup

    When you run the built-in test programs, you can either run all the test automatically (by pushing the Execute All button described above), or you can select which parts of the EM 1002 system you wish to test. The options available here allows you to test individual functions and hardware items.
  • Page 167 Operation menus TRU Power This test checks the low voltage power supply in the EM 1002 Transceiver Unit. All the output levels are tested. RX Noise Level The level is normally higher at shallow waters due to reflections of the ship’s noice from the bottom. This noise, the flow noice, normally increases with the ship’s speed.

  • Page 168: Message Field

    EM 1002 / Base version TX via RX This test checks all the transmitter channels through the water to a neighbouring reciever. One pulse is transmitted at a time using one transmitter element only. Note that this test can last for several minutes.

  • Page 169: 5 I/O Interfaces

    I/O Interfaces 5 I/O INTERFACES Overview Various data may be imported to or exported from the EM 1002 Operator Station on serial lines. The imported data may come from another computer (in which case specific formats must be used) or directly from sensors.

  • Page 170: I/O Functions

    EM 1002 / Base version I/O functions The I/O functions are enabled by selecting the corresponding option button beside the function name. A green button indicates that the function is currently active. The different I/O functions are listed by group as follows:...

  • Page 171: I/O Interfaces

    · SV Plus Probe Profiling - generate a profile using data collected with the AML SV Plus probe · AML Calc Format Profile · KS SSP Profile Datagram · Kongsberg Simrad ASCII Profile Datagram · Kongsberg Simrad Binary Profile Datagram Datagram Input: · Tide Datagram Output: ·...

  • Page 172: Menu Commands

    EM 1002 / Base version Menu commands The menu includes the following commands: File - Save - saves current settings - Read - allows you retrieve previous values - Exit - closes the I/O Interfaces dialogue box Edit - Device Setup...

  • Page 173: Edit Menu

    I/O Interfaces Edit menu Device Setup Figure 58 - The Device Setup dialogue To modify the device setup for any given function, select the function from the I/O Functions button at the top of the dialogue box. The various fields and items available for selection in Device Used are then updated according to the I/O Function chosen.

  • Page 174: Probe

    Probe Probe Controls Sound Speed Profile Input The EM 1002 may receive the sound speed profiles from either a combined sound velocity and depth/pressure sensor, or from an external computer. The only separate sensors currently accepted by the EM 1002 software are the Applied Microsystem’s Smart SV&P Probe and the SV Plus Probe.

  • Page 175: Sv & P Smart Probe Profile Input

    The following procedure allows you to collect the sound speed profile using the Applied Microsystem’s Smart SV&P Probe connected to the EM 1002 Operator Station. The procedure assumes that you have defined a serial line input for the probe. 850--160977/E...
  • Page 176 EM 1002 / Base version Open the I/O Interfaces on the EM 1002 Launchpad. Click the SV&P Smart Probe Profiling option button. Lower the probe to a stable position beneath the water surface. Apply power to the probe and wait for the displayed values to stabilize.

  • Page 177: Sv Plus Probe Input

    I/O Interfaces SV Plus Probe Input The SV Plus Probe is configured, monitored and managed from the SV Plus Probe Profiling section of the Probe Controls window. The section may be expanded or collapsed using the section title button. The default state is collapsed. The section contains several subsections whose titles are used as section titles below.
  • Page 178 EM 1002 / Base version Current Logfile Displays name of file local to the probe containing probe sampling data. Current Sample Rate Displays current probe sample rate. One Scan Displays one scan of data using the current setup. Data Management Fetch &...
  • Page 179 I/O Interfaces Figure 60 - The Device controls dialogue box, SV Plus Probe Profiling. Erase Logfile Lists all files local to the probe available for erasure. The files are echoed in the input verification area and in a popup selection window.
  • Page 180 EM 1002 / Base version Monitoring: Create Profile from Data This option is used to switch On / Off logging of realtime data. Realtime data is only available when the probe is deployed with a communication cable attached. In addition, monitoring of probe data must be activated.
  • Page 181 I/O Interfaces The Use Sound Speed Delta and the Pressure Delta options in the Sampling By Time Extensions frame should both be deselected. Sound Speed based Use the Sample Mode option menu to select the By Sound Speed option. This option configures the probe to sample continuously and to log a data scan only when the sound speed has changed with a value specified in the Sound Speed Delta input field.

  • Page 182: Ping Display

    EM 1002 / Base version 6 PING DISPLAY Purpose The Ping Display presents a real-time view of the system performance. The display shows the raw data from the system after corrections have been applied for vessel attitude and sound speed.

  • Page 183: Crosstrack Display

    The Ping Display ® Refer to page 180. · Displays ® Refer to page 187. · Help Figure 61 - The Ping Display main window Crosstrack Display This display shows the measured depths in all beams from the last ping. Different colours are used to show if a beam has a valid bottom detection, and if so what type of detection has been used: 850-160977/E...

  • Page 184: Beam Intensity

    EM 1002 / Base version · Red to show beams with phase detection · Blue to show beams with amplitude detection · Beams without any detection are not shown Legends describing these colour codes may be shown along the bottom of the display.

  • Page 185: Waterfall

    The Ping Display Turning legends and scales off will expand the display area containing the bars. Parameters controlling these displays may be found in the Parameter Window or as menu items in a popup menu. ® Please refer to page 170 for the Common display controls, and page 172 for the popup parameters available for this display.

  • Page 186: Cdd Display - Colour Coded Depth Display

    EM 1002 / Base version Parameters controlling this display may be found in the Parameter Window or as menu items in a popup menu. The data is shown as on an oscilloscope, with time on the horizontal X axis and level on the vertical Y axis.

  • Page 187: Time Based Displays

    The Ping Display You may at any time switch CCD presentation mode by using the rightmost mouse-button and select wanted mode from the display mode selection popup-menu. The display may also be switched off using the same menu. Default mode for the CCD Display is depth per beam. Please note, that when both the Waterfall Display and the CCD Display are running at the same time, they will synchronise the colour coding.
  • Page 188 EM 1002 / Base version · Backscatter - 4 Beams, user-selectable · Across - 4 Beams, user-selectable Y1 Axis (Lefthand Axis): · Heave, Active Motion Sensor · Heave, Inactive Motion Sensor · EM & EA Depth (in a multi sounder configuration) ·...

  • Page 189: Operational Procedures

    EM 1002 is activated. The program is then designed to be active throughout the operation of the EM 1002 operation. The procedures supplied here are only submitted in case the Ping Display is stopped by accident.

  • Page 190: Common Display Controls

    EM 1002 / Base version Select File on the Ping Display’s main menu bar. Select Exit on the drop-down menu. Common display controls To change the display parameters Several parameter settings are available to control the display of information in the displays. Some of the parameters are available in a Parameter Window, some in a display-dependent popup menu.

  • Page 191: Special Display Controls

    The Ping Display Special display controls Special Single Beam controls To modify the beam width Select Options on the main menu bar. Select Parameters on the drop-down menu. In the Single Beam section enter the EA500 beam width used for the EA sounder.

  • Page 192: Popup Parameter Selection

    EM 1002 / Base version Select Options on the main menu bar. Select Parameters on the drop-down menu. To modify type of data displayed The section contais one button for each type of data · Amplitude · Phase · Filtered Amplitude ·...

  • Page 193: Common Parameters

    The Ping Display Point the mouse cursor in the window that you want to change displayed type of data. Press SHIFT + Mouse Button 3 in the selected window and a popup menu appears. Active parameters in that window have a green indicator to the left.
  • Page 194 EM 1002 / Base version · On: Horizontal gridlines are displayed. Waterfall Display does not have any grid lines. Time Based Graphs Sync. Time Axis · Off: All data from all buffers are displayed disregarding any difference in buffer start- and end-time.
  • Page 195 The Ping Display · On: The data is scaled (if scaling is activated) using the Depth Delta parameter found in the Parameter Window. Has the effect of smoothing spiky data. Display Selection To modify displayed data type All displays except the Waterfall diplays may change the type of data being presented.
  • Page 196 EM 1002 / Base version · On: Height data is displayed, using the rightmost Y axis. The data buffer contains 100 samples. Roll / Pitch, Active Sensor · Off: No roll / pitch sensor data is displayed · On: Roll / pitch data from the active sensor is displayed, using the rightmost Y axis.

  • Page 197: Display Controls

    The Ping Display · On: EM & EA Depth data is displayed. The EM beam within the footprint of the EA beam is displayed. The data buffer contains 100 samples. Depth Below Keel · Off: No depth data displayed · On: The computed depth-below-keel data displayed. The data buffer contains 100 samples.
  • Page 198 EM 1002 / Base version ® Refer to page 41 for a description of the File Selection dialogue box. To retrieve a depth file for playback Select Options on the main menu bar. Select Display Control on the drop-down menu.

  • Page 199: Command References

    The Ping Display Command references Introduction This chapter describes the various commands and dialogue boxes used throughout the Ping Display application. The following options are available on the main menu: · File · Options · Display · Help Each of these options have a menu with further commands. In addition, you access the Graph Mode Selection popup menu when you click the right mouse button when the mouse pointer is placed within one of the top two graphs.

  • Page 200: File

    EM 1002 / Base version · Other Graphs · Beam intensity · Scope File This selection brings up a menu which only contains one alternative: Exit. This command closes the Ping Display. No warning is given before the Ping Display closes.
  • Page 201 The Ping Display · Scope · Beam Selection Figure 64 - The Parameter dialogue box, part 1 Single Beam Used when running a singlebeam- multibeam configuration, to input key information on EA setup. The Single Beam Field includes the Sounder Beam Width parameter. 850-160977/E...
  • Page 202 EM 1002 / Base version The Sounder Beam Width parameter value depends on the type of transducer used for the EA500. It varies with the frequency, and is a fixed value that may be found in the product specification of the installed EA500 echo sounder.
  • Page 203 The Ping Display Figure 65 - The Parameter dialogue box -part Amplitude - This button is used to select whether the amplitude curve should be displayed or not. Phase - This button is used to select whether the phase curve should be displayed or not.
  • Page 204 This dialogue box allows you to select the source of the data to be presented by the Ping Display. These data may either come directly from the EM 1002 echo sounder, or they may be read from a disk file containing previously collected data. In the latter case, the Display Control dialogue box gives you several options on how to replay the stored data.
  • Page 205 The Ping Display Real time - Logging must be active if you select this alternative. The other options in the Display Mode dialogue box can not be applied as they are only relevant for playback mode. Playback - If you choose this alternative, you must select a file for playback.
  • Page 206 EM 1002 / Base version Replay Control These buttons acts like the similar physical buttons found on audio or video cassette recorders. They are used for starting and stopping the playback of the file, and for changing the playback position of the file.

  • Page 207: Displays

    The Ping Display Displays This menu item brings up the following pull-down menu: · Tear-off Waterfall · Tear-off Crosstrack · Tear-off Beam Intensity These menu commands all act in a similar way. A copy of one of the displays is put into a new window. This window obeys all the usual window controls, and may be resized, moved, etc.

  • Page 208: Survey Display

    EM 1002 / Base version 7 SURVEY DISPLAY Introduction Purpose The purpose of this chapter is to provide detailed information about the commands and parameter settings in the Survey Display main window. Some commands and parameters are used in other display modules, and have the same meaning as they have here, they are only described here.

  • Page 209: Main Menu Commands

    Survey Display Figure 69 - The survey display main window Menu bar - This the top line containing the the Main menu commands listed below. Information bar - This is the area below the geographical area, where scaling factor and other information is displayed. Tool bar - Buttons for easy access to common view functions.

  • Page 210: File

    EM 1002 / Base version File Overview The File menu contains general commands for printing and closing the Survey Display utility. When the File menu item is activated a pull-down menu with the following alternatives appears: · Plot · Import DAF contours ·...

  • Page 211: Grid Display

    Survey Display Import DAF contours Choose this option to import depth contour lines from a .daf-format file containing depth curves and display them in the Grid Display. If there already are .daf-format depth contour objects in the application, the old ones will de deleted before new objects are inserted.
  • Page 212 EM 1002 / Base version You may select only one or all of the depth curves. The selected depth will then be displayed on top of all other data in the Graphic Display. If you select only one depth contour...

  • Page 213: Edit

    Survey Display Edit Overview The drop-down menu activated by this menu item contains operations for measuring distances and positions, selecting lines, and defining the display regions for the Grid display utility. The right mouse button is used as an edit button when the pointer is inside the geographical area of the window.

  • Page 214: Reset Selection

    EM 1002 / Base version Reset selection Reset selection This command deselects all previous selections made. 850--160977/E...

  • Page 215: Keep Function

    Survey Display Keep function This option is just a function, and not a dialogue box. It is accessed Edit from the menu in the Survey Control window. The function allows the same operation to be performed over and over again, until an other command is selected on the menu.

  • Page 216: Position

    EM 1002 / Base version Position The Position function displays the geographical position of the Edit points. It is available from the menu in the Survey Control window. To execute, select this command and press the right mouse button in the geographical area. A position is then written in the information text field at the bottom of the window.

  • Page 217: Distance

    Survey Display Distance This function enables you to measure distances in the geographical Edit window. It is accessed from the menu in the Survey Control window. To execute; Press the right mouse button down. Drag the cursor to another position while you hold the mouse button depressed.

  • Page 218: New Display Area

    EM 1002 / Base version New Display Area This command is used to define a new geographical area to be used by the Grid Display utility. Create an rectangular area with the right mouse button. Note: The display area must have been made visible by the settings in the Show/Hide window.

  • Page 219: View

    Survey Display View Overview The pull-down menu activated by this menu item has menu commands for controlling how the information in the geographical area is presented. The following menu commands are available: · Annotation colours · Show/Hide · Colour mapping ·...

  • Page 220: Annotation Colours

    EM 1002 / Base version Annotation Colours The background colour and the colours for the different attributes and objects displayed in a geographical window can be changed to suit your preferences. The Annotation Colours dialogue box is then used. In this dialogue box, the colour for each attribute type can be chosen from a set of 18 different colours.
  • Page 221 Survey Display All modules have a common set of items: Background, Selected and Grid, in addition to the specific items for each module. Current settings for each module are saved as a part of the parameter settings for each survey. To select a new colour for an item;...

  • Page 222: Show/Hide

    EM 1002 / Base version Show/Hide The Show/Hide dialogue box contains a list of items that may exist in the client area of the geographical window. These items can either be displayed or hidden. A check button for each item indicates the current display status for the item.
  • Page 223 Survey Display For more detailed information about projections, please see the Survey format conversion tools in the System Administration chapter in the maintenance manual. Coast The coast lines are toggled on or off by this button. Legend The colour legend of the different objects in the display is toggled on/off by this button.

  • Page 224: Colour Mapping

    EM 1002 / Base version Colour mapping Modules where the survey data is displayed as a continuous data set, require a definition of the colours to be used. The Colour Mapping dialogue box uses an HLS (Hue, Light, Saturation) model for this purpose.
  • Page 225 Survey Display When RGB cube (Red/Green/Blue) is selected, the colour table will be a standard RGB cube colour table defined commonly for all windows on the computer. The colour table of the screen do not change even if you change the HLS settings in the Colour Mapping dialogue box.
  • Page 226 EM 1002 / Base version · If CCW (Counter-Clock-Wise) is selected, then the lower data value will be displayed using the minimum value defined for the corresponding HLS component, and the upper data value will be displayed using the maximum HLS value defined.
  • Page 227 Survey Display Acceptance OK - This button is used to implement and save the new colour settings for later use. The dialogue box is closed. Apply - This button allows you to implement the new settings on a trial basis. The new colours can be seen in the geographical window immediately, but are not saved.
  • Page 228 EM 1002 / Base version Contour priority... Contour priority is accessed from the view menu in the main window. Select this option to specify if you want to highlight one of the imported contour lines in the Grid Display. Note: The Contour priority is for highlighting one of the imported .daf...

  • Page 229: Lat/Long Format

    Survey Display Lat/Long Format The scales along each of the axes in a geographical window represents geographical latitude and longitude respectively. The latitude and longitude coordinates will be displayed in one of three different formats: · Decimal degrees · Degrees and decimal minutes ·...

  • Page 230: Data Choice

    EM 1002 / Base version Data choice Overview The purpose of this command is to select the type of beam data to be displayed in the nearest vicinity behind the vessel. In realtime mode, the main geographic window will display data as they are received from the logging process.
  • Page 231 Survey Display Quality factor - A data quality measure for each beam. Small values (on a scale from 0 to 128) conveys good data quality. Only the lower 6 bits are used. Ping mode - Which mode the echo sounder was using. Beam number - A number from 1 to 111 identifying each beam.

  • Page 232: Update View Area

    EM 1002 / Base version Update view area The View Area is defined as the rectangle covering the current survey. Figure 77 - The View Area This command redraws the view area. Redraw This command updates the current display image with new data received since the image was last generated.

  • Page 233: Vessel In Centre

    Survey Display Vessel in centre This command acts like an on/off switch. When the function is activated, a small rectangle appears next to the Vessel in centre command on the menu. By enabling the Vessel in Centre command, the vessels relative position on the screen will be constant.

  • Page 234: Update Interval

    EM 1002 / Base version Update Interval Update Interval is available from the View menu in the main window. The purpose of this command is to define an automatic display redraw. During normal operations, you may find that the ping rate is very high, or the new positions come very often.

  • Page 235: Options

    Survey Display Options Overview The pull-down menu activated by this menu item contains only one menu command: · Display Display This command is used to select another workstation as primary or secondary display unit for utilities launched from the main geographical window.

  • Page 236: Processing

    EM 1002 / Base version Processing Overview All utilities except the main geographical window in the Survey Display software application, are started from the Processing pull-down menu. The utilities that work on specific lines or areas will use lines or areas that are currently selected in the main geographical window.
  • Page 237 Survey Display Sonar Image This utility gives you a reflectivity or backscatter image of the seabed. The Sonar Image application is also accessed from the Launchpad, and it is used during online operations. ® The Sonar Image can be found on page 304. Create Grid This command is used to define the cell size for the reference grid The Grid Display utility displays the data using this grid.
  • Page 238 EM 1002 / Base version The Sonar Image Replay is accessed from the Processing menu, and used during offline operations. ® The Sonar Image can be found on page 304. ® The Seabed Viewer can be found on page 313.

  • Page 239: Import/Export

    Survey Display Import/Export Export lines General The purpose of the Import/Export utility is to transfer survey lines from one survey directory to another. All the survey format files representing a survey line, or alternatively only specified file types, are copied. The utility will either copy all survey lines, or only some selected lines.
  • Page 240 EM 1002 / Base version Some of the buttons encountered in the dialogue boxes described below activate a restricted version of the Kongsberg Simrad SurveyControl utility. Use the File -> Exit menu command, and push the OK button in the resulting confirmation dialogue box to exit from this utility.
  • Page 241 Survey Display The following dialogue boxes will appear: · File type selection box · Destination selection box Note: The affected survey lines will be deleted from the current survey. Note: To see the changes to the current survey, you must exit from the main geographical window and restart Survey Display.
  • Page 242 EM 1002 / Base version Restore This option is used to restore a tape Backup previously taken with the Backup command, to the current survey directory. All files are restored. The following dialogue box will appear: · A dialogue box informing you about the tape read operation.
  • Page 243 Survey Display All types - All file types will be included, disregarding the status of the other check buttons. Sidescan - Sonar image data (*.sidescan files) will be included. Depth - Depth data will be included (*.depth files). Pos - Position data will be included (*.pos files). Index - Index data will be included (*.ind files).
  • Page 244 EM 1002 / Base version The other is a push button to the right of this text input field. Pushing this button, a survey selection dialogue box appears. Click on the survey you want. Use eventually the scroll bar on the right hand side to get more surveys into view.
  • Page 245 Survey Display Lines to be COPIED This option is used to show which survey lines are included in the transaction. Use the scroll bars to get more of the list into view. This box is not used for further line selections. Tape If this check button is checked, the survey lines to be exported will be transferred to magnetic tape.

  • Page 246: Grid Display

    EM 1002 / Base version 8 GRID DISPLAY Purpose The purpose of the Grid Display is to display a gridded image of large areas of the survey. This image can be used for a visual inspection of the quality and distribution of the logged data and related data for a specified geographical area.

  • Page 247: Main Menu

    Grid Display Figure 83 - The Grid Display main window Main menu The Grid Display’s main menu bar provides the following choices: · File · View · Planning · Crossline · Help The Planning and Crossline modules are explained separately. ®...

  • Page 248: Information Bar

    EM 1002 / Base version Information bar The information bar at the bottow of the window contains information about the scale (for example 1:25000). Tool bar The buttons on the tool bar provides general tools for scaling, mouse operations and panning.

  • Page 249: Operational Procedures

    Grid Display Operational procedures Purpose The purpose of the Grid Display is to display all depths and related data for a specified geographical area. The logged data for this area is then displayed in a dedicated window. The area to be displayed is defined in the main geographical window using the Survey Display’s Edit->New Display Block command.
  • Page 250 EM 1002 / Base version Figure 85 - Create grid warning message Press the right mouse button to select an area. Click once on the area border to select it. Select Edit on the Survey Display’s main menu bar. Select New Display Area on the Edit menu.
  • Page 251 Grid Display Select Processing on the Survey Display’s main menu bar. Select Grid Display Realtime on the menu. - The grid is updated continously. Note: When the vessel leaves the area defined by the realtime grid, the gridding stops. Note: If you define an area for the realtimegridding that is too large, the Grid Display Message dialogue box will appear with a warning.
  • Page 252 EM 1002 / Base version Select Grid Display Realtime on the menu. - The grid is updated continously. Note: When the vessel leaves the area defined by the realtime grid, the gridding stops. Note: If you define an area for the realtimegridding that is too large, the Grid Display Message dialogue box will appear with a warning.
  • Page 253 Grid Display You can view and modify the distance between the chart contours. Select View on the main menu. Select Make Contour... on the submenu. Enter the desired contour interval. Press Ok. Once the contour lines are established, you can place depth labels on them.

  • Page 254: Command References

    EM 1002 / Base version Command references Introduction This chapter describes the various commands used throughout the Grid Display. The following options are available on the main menu: · File · View · Planning · Crosslines · Help Each of these options have a number of commands available on drop-down menus.

  • Page 255: File

    Grid Display File Overview The File option on the Grid Display’s main menu bar activates a drop-down menu where the following commands appear: · Plot · Export depth contours... · Import... · Exit Plot This menu command activates the Plot dialogue box. ®...
  • Page 256 EM 1002 / Base version Export depth contours This option exports contour lines to an output file. You can select from the following options: · plotmtv · DAF You can also select the output file name. Plotmtv is a general purpose graphics utility available on the Internet.

  • Page 257: View

    Grid Display View Overview The drop-down menu activated by this option contains commands for information presentation. · Annotation colours · Show/Hide · Lat/Long format · Colour Mapping · Contour Priority · Selections · Vessel in center · Make contour · Contour Labels at ·...
  • Page 258 EM 1002 / Base version The Contour Priority command is used to specify priority of imported contour lines to be displayed in the Grid Display. Note that the contour curves may be visible or hidden depending on settings you have selected in the Show/Hide dialogue box.

  • Page 259: Make Contour

    Grid Display Make Contour Make contour is available from the View menu. This dialogue box enables the necessary computations to display the contour curves connecting all the points with equal depth. The dialogue box (shown below) asks for the current contour interval in meters.

  • Page 260: Contour Labels At

    EM 1002 / Base version Contour Labels At Once contour lines are enabled, you can choose at which levels the contour curves should have labels displaying the depth. The following options are available: · Every level · Every second level ·...

  • Page 261: Shading Parameters

    Grid Display Shading parameters This menu option allows you to choose the “amount of shading” to be applied when the Sun illumination alternative is selected on the Grid/Cell sub-menu. Options are: · Normal · 2 * Normal · 4 * Normal ·...

  • Page 262: Create Grid

    You can then either cancel the process, or continue. To start EM 1002 on a survey, run the system for a few minutes without any grid defined, and then stop the logging. Use the Create Grid command to define a reference grid.
  • Page 263 Grid Display Figure 88 - Create Grid warning A subsequent re-definition of the reference grid will force the system to compute depths values for the new cells, which will take some time if the amount of data is large. Try to select the right cell size early in the survey. A good rule is to define the reference grid when the first line has been finished, and before the start-up of the next.

  • Page 264: Bridge And Helmsman Display

    EM 1002 / Base version 9 BRIDGE AND HELMSMAN DISPLAY Purpose The Bridge and Helmsman Display is designed to view track and coverage data. It presents a geographical view of the current survey area with vessel position, survey lines and swath coverage. On the Bridge and Helmsman Display various steering information with regard to the current survey line may be displayed.
  • Page 265 Bridge and Helmsman Display Figure 89 - Bridge and Helmsman Display. The Helmsman information is in the grey areas of the window. The Tool bar provides easy access to a number of view functions. ® The Tool bar is explained on page 48. 850-160977/E...

  • Page 266: Operational Procedures

    EM 1002 / Base version Operational procedures Windows The Bridge and Helmsman Display operates in a single window. In this window you can view the survey lines. Start and exit Before you start the Bridge and Helmsman Display The Bridge and Helmsman Display is designed to run on a local workstation/x-terminal/remote display on the vessel’s bridge, and...

  • Page 267: Common View Procedures

    Bridge and Helmsman Display Clock OK to apply. Note: Usually, only the Bridge Display is sent to the display you select here. To start the Bridge and Helmsman Display The Bridge and Helmsman Display is started from the Survey Display’s main menu as follows: Select Processing on the main menu bar.
  • Page 268 EM 1002 / Base version DST - Distance to Waypoint. Distance in meters to the next waypoint. XTE deviation indicator - XTE bar displayed at the top of the screen. Use small fonts - Toggle between small and large fonts.
  • Page 269 Bridge and Helmsman Display The Bridge and Helmsman Display has the same colour- and show/hide settings as Survey Display, except that coverage is on, legend off, grid (metric) on, planning module on, displaying user defined line names and helmsman on. For the Helmsman display the operator can set the colours of the background, the letters and the indicator in the XTE deviation indicator.
  • Page 270 EM 1002 / Base version The more you display in the Helmsman, the more work for the computer and the bigger it gets. Try to choose only those values the helmsman really needs. If you change the planned job in Survey Display, you need to restart the Helmsman display in order to view the changes.

  • Page 271: Command References

    Bridge and Helmsman Display Command references Introduction This chapter describes the various commands used throughout the Bridge and Helmsman Display application. The following options are available on the main menu: · File · Edit · View Each of these menu options have a number of commands available on pull-down menus.

  • Page 272: Edit

    EM 1002 / Base version Edit The Edit option on the main menu bar contains these commands: · Reset selection · Keep function · Position · Distance · New Display Area · Resize Display Area ® Reset selection is described on page 194.

  • Page 273: View

    Bridge and Helmsman Display View The View option on the main menu bar contains the following commands: Several of these menu options are identical to the options on the Survey Display main menu. These have been described previously in this document as follows: ®...

  • Page 274: 10 Calibration

    It is also used to find the outer beam angle offset of the EM 1002 transducer. The Calibration utility will also assist in judging the quality of a sound speed profile.

  • Page 275: Main Window And Menu Bar

    Calibration utility The Calibration utility is designed for determination of sensor offsets. It is NOT intended for determining the angular orientation of the system transducers, these must be determined through measurements as described in the installation manual. The reason for this is that it is not possible to do a linear addition of sensor offsets and transducer orientation angles.

  • Page 276: Calibration

    EM 1002 / Base version Figure 91 - Calibration main window 850--160977/E...

  • Page 277: Calibration Survey

    Calibration utility 10.2 Calibration survey Introduction The correct calibration of the vessel attitude sensors and the time delay of the positioning system is vital to the quality of the data collected by the multibeam echo sounder. While modern motions sensors have little or no drift with time, they may fail. The time delay of the positioning system may vary according to system set-up.
  • Page 278 EM 1002 / Base version The slope used for pitch and time delay calibration should have an appreciable relative change in depth from top to bottom, say 30%, if pitch offset and time delay are to be resolved accurately. Note...

  • Page 279: Roll Offset In The Acrosstrack Direction

    Calibration utility Roll offset in the acrosstrack direction Choose a horizontally flat area (at least acrosstrack). Survey a sufficiently long line twice in opposite directions. Ensure that a sufficient lead-in time to the line is used for the roll sensor to stabilize.

  • Page 280: Pitch Offset And Time Delay

    EM 1002 / Base version If there is a roll offset, there will be a depth difference between the two data sets, linearly increasing with acrosstrack distance from the centre. Pitch offset and time delay Choose an area with a continuous but not too steep slope alongtrack.
  • Page 281 Calibration utility Side view Survey line Seabed Slope (CD3571) Top view Survey line Slope Calibration corridor Figure 93 - Pitch offset and time delay calibration procedure ® Refer to figure 94 on page 262. Alternative 2 Find an easy recognizable point or feature on the bottom such as a peak or a depression.
  • Page 282 EM 1002 / Base version Side view Survey line Seabed Slope (CD3571) Top view Survey line 2 Survey line 1 Slope Calibration corridor Figure 94 - Heading offset calibration procedure (Alternative 1) The corridor used to compare data from the two survey data sets should be placed so that it intersects the feature, and is parallel to the survey lines.

  • Page 283: Verification

    Calibration utility Side view Survey line Reference point Seabed (CD3572) Top view Reference point Survey line Survey line Calibration corridor Figure 95 - Heading offset calibration procedure (Alternative 2) Verification After the calibration has been completed, we strongly advise you to repeat the procedure for verification.

  • Page 284: Outer Beam Angle Offset Calibration

    EM 1002 / Base version Outer beam angle offset calibration Run two perpendicular survey lines on a relatively flat bottom. The depth should be approximately 50 to 100 meters, and 150 degrees coverage should be used. In the crossover area of the two lines, use the roll calibration utility.
  • Page 285 Calibration utility Side view Survey line Flat seabed (CD 1065) Top view Calibration corridor 1 Survey Survey line 1 line 1 Calibration Survey corridor 2 line 2 Figure 96 - Offset beam angle calibration 850--160977/E...

  • Page 286: Command References

    EM 1002 / Base version 10.3 Command references Overview This chapter describes the various commands used throughout the Calibration utility. The next pages describes the various commands used throughout the Calibration utility, and refers to other descriptions as required. The following options are available on the main menu: ·...

  • Page 287: Edit

    Calibration utility Edit Overview The Edit option on the main menu bar contains these commands: · Reset selection · Keep function · Position · Distance · New line · Move point · Move region · Delete region · Pitch calibration ·...
  • Page 288 EM 1002 / Base version New Line This command is used to create a new calibration corridor. Depth profiles will be made along this corridor. After this menu command has been selected, a new line is made by placing the pointer at an initial point, pressing the right mouse button and dragging the pointer to where the line should end.

  • Page 289: Compass Calibration

    Calibration utility Pitch Calibration This command is used to analyze data in the region around a calibration line in order to do pitch and/or position delay calibration. Use the following procedure: Select two separate lines to use for pitch calibration. These lines should cover the same track, but be in opposite direction.
  • Page 290 EM 1002 / Base version - When you run your multibeam echo sounder according to these two lines, the covered area must overlap between the lines. In the commonly covered area, you must also make sure that you have an easily identified obstacle, such as a large rock or a wreck on the seabed.
  • Page 291 Calibration utility Figure 98 - Calibration profile window for pitch/time calibration Window elements Each window contains the following elements: · Information and tool bar · Graphic area · Control area On the left hand side of the graphic area the profile window contains the following controls: Information and tool bar This information shows the heading of the two lines.
  • Page 292 EM 1002 / Base version The slide bars are used to change the offset values by dragging the slider, clicking on the arrows (the values change in minor steps) or clicking to either side of the slider (the values change in major steps).
  • Page 293 Calibration utility Cancel will close the window without any changes, while OK will use the new values. Redraw This button is used to force a redraw of the data in the graphical part of the window. Z Zoom in z zoom out R Reset the view to the initial setting U Undo last zoom Acceptance...

  • Page 294: View

    EM 1002 / Base version 10.4 View Overview The View option on the menu bar contains these commands: · Annotation colour · Show/Hide · Lat/long format · Colour mapping The Annotation Colours command presents the Annotation Colours dialogue box, where you can modify the various colours used in your graphical window presentations.

  • Page 295: Help

    Calibration utility Help The Help option provides on-line help. 850--160977/E...

  • Page 296: 11 Crosslines

    Calibration. Crosslines is available from several of the geographical displays in the Kongsberg Simrad multibeam echo sounders and postprocessing systems. Crosslines may then be defined and viewed. The survey lines from which data is to be analyzed are selected in the survey display and a crossline is also selected.

  • Page 297: Operational Procedures

    Crosslines 11.2 Operational Procedures To start a new crossline Start the Survey Display. Select Displays. Select Create Grid. Select Displays. Select Grid Display. Select Crosslines. To save a crossline Select Save Crosslines on the Crosslines menu. To delete a crossline Position the mouse cursor on top of the line you wish to delete, and click once.

  • Page 298: To Assign A Sound Velocity Profile To A Crossline

    EM 1002 / Base version Select Change Width of Selected Crossline on the Crosslines menu. Enter the new width value in the dialogue box. - The width value is entered in meters. Press Ok to apply and close, or Cancel to close the dialogue box without changing the width.

  • Page 299: Crosslines Menu

    Crosslines 11.3 Crosslines menu Overview The Crosslines utility is accessed as a command, and controlled from a sub-menu. You may find it convenient to “tear off” this sub-menu to place the Crosslines menu in a separate window. The menu provides the following options: ·...

  • Page 300: Save Crosslines

    EM 1002 / Base version ® Refer to page 277 for the procedure. Save crosslines Use this command to save the crossline definitions and the selection of survey lines to a file for later use in the current or other geographical displays.

  • Page 301: Crosslines Window

    Crosslines 11.4 Crosslines window Overview In the main geographical window, the crossline number is always displayed in the beginning of the line. In the Crosslines display, the selected line(s) are shown with the names and the corresponding line depths identified using the same colour. ®...

  • Page 302: File

    EM 1002 / Base version File The only command on the File menu is Exit. Use this command to close the window. Edit You can reprocess the data in the crosslines with new offsets in time, roll and pitch, and he can reprocess the data with new sound speed profiles.

  • Page 303: View

    Crosslines View The view menu is used to control the display. Assign crosslines to windows There are four windows defined in displayCrosslines. There can be 15 crosslines at one time. In this interface you can decide which crossline should be displayed in what window. Each crossline is listed with four buttons behind it.
  • Page 304 EM 1002 / Base version Set scales You can set the desired scale in the x- and y-direction. The x-direction is centimeters along the crossline and the y-direction is centimeters depth. The y-scale defines how many centimeters depth there is per centimeter on the screen. The x-direction defines how many centimeters along the crosslines there is per centimeter on the screen.

  • Page 305: 12 Planning

    Planning 12 PLANNING 12.1 Introduction A survey is seldom performed without any planning being done beforehand. A comprehensive plan would normally define the following: · the area to be surveyed · the survey lines which the vessel must follow · the direction and order in which the lines are to be run ·...
  • Page 306 EM 1002 / Base version The planned lines must take into account islands, coastlines, shoals or other obstacles within the survey area which may limit a safe and efficient survey. The achieveable coverage of the multibeam echo sounder and the overlap required between the neighboring lines is usually used to determine the line spacing.

  • Page 307: Operational Procedures

    Planning 12.2 Operational procedures Introduction These operational procedures cover the main functions available in the Planning utility. To open a job Select Jobs -> Open. - A small dialogue box appears. It lists the current jobs available, and allows you to select on. Press OK Select the type of coordinates to use.
  • Page 308 EM 1002 / Base version Figure 102 - Creating parallel lines 850-160977/E...
  • Page 309 Planning To create a polygon Select Planning -> Polygons. - A submenu appears. Click on the tear-off line to place the menu in a separate window. Select New on the submenu. Create the polygon by holding down the right hand mouse button.

  • Page 310: Command References

    EM 1002 / Base version 12.3 Command references Introduction The following commands are available from the Planning menu: · Jobs · Print · Lines · Polygons · Activate line · Deactivate line · Select all lines · Export selected lines ·...

  • Page 311: Jobs

    Planning Jobs Overview A “job” is a collection of planned lines and possibly one or more polygons. Each job is given a unique name. A job must first be selected as the current job before any other operations can be performed.
  • Page 312 EM 1002 / Base version Figure 104 - The Options dialogue box ® Refer to figure 105 Figure 105 - The Open Job window Delete Use this command to delete a current job. You are given a warning before the system allows you to delete the job.

  • Page 313: Print

    Planning The planning module is available in the Survey and the Grid Display. A plan made in one module will be available in all the other modules of a system. In case a job is saved in one module while it is being edited in another module, a warning will be given if save or exit is chosen in the other module, to allow you to choose which version is actually to be saved.

  • Page 314: Lines

    EM 1002 / Base version Lines Overview The Lines submenu is used for all line manipulations such as creation, editing, deletion or selection. The following options are available on the submenu: · New · Edit... -> · Move · Reverse direction ·...
  • Page 315 Planning ® Refer to figure 107 Figure 107 - The Edit lines dialogue box The line or polygon to be edited is selected from list containing all selected lines and polygons. A new line is also available in the list, and it may be turned into a new polygon by clicking the toggle button This is a polygon, not a line.
  • Page 316 EM 1002 / Base version Note: A line must have at least two coordinates and a line name. A polygon must have at least three coordinates. Any changes are only committed after clicking the button Ok or Apply. Rename... This command can be used to rename any of the planned lines. You can only rename one line at the time.
  • Page 317 Planning Figure 108 - Select Lines dialogue box · Select lines from list below: lines are selected by clicking on their names. · Select all lines created between these two times: lines are selected through the date and time the lines were created and the entered time limits (the time of creation is stored allthough it is not visible).
  • Page 318 EM 1002 / Base version Cancel selections Use this option to deselect previously selected lines (not polygons). Keep function Selecting Keep function will allow repetition of the chosen function many times without clicking in the menu. Selecting Keep function again allows a new item from the menu to be chosen.

  • Page 319: Polygons

    Planning Polygons Overview The following options are available from this submenu: · New · Edit · Delete · Fill · Clip selected lines · Keep function Use this command to create a polygon. Note: A polygon must have at least three points. A line from the last point to the first point is generated automatically.
  • Page 320 EM 1002 / Base version Figure 109 - The Fill polygon dialogue box All the lines which are created in this way are given new linenames by the system. There is no point in editing this line (changing the linename or adding information to the line) prior to using it in this operation sincxe they are also given new linenames by the system.
  • Page 321 Planning Keep function This command works the same way as the Lines -> Keep function. ® The command is also described in general terms on page 195. 850-160977/E...

  • Page 322: Activate Line

    EM 1002 / Base version Activate line After a line has been selected it can be made active. The active line is usually the current line to survey. The information on the bridge and helmsman’s displays will depend on which line is active.
  • Page 323 Planning Figure 110 - The Import form BinStat dialogue box Importing planned shoals from BinStat from the same survey several times will only retain the last imported set, but several sets may be imported from different surveys. Note: Note that this operation may cause the limit of 1000 lines in a job to be exceeded.

  • Page 324: 13 Sonar Image

    EM 1002 / Base version 13 SONAR IMAGE 13.1 Purpose The Sonar Image utility displays the seabed image data. For each ping a straight line is plotted, this covers the swath width. The darkness of the display at any point represents the reflectivity of the bottom.

  • Page 325: The Sidescan Window

    Sonar Image ® These are described on page 307. The sidescan window The Seabed window presents the graphical result of the processing. 850--160977/E...

  • Page 326: Operational Procedures

    EM 1002 / Base version 13.3 Operational procedures To start the Sonar Image Select the following command sequence in the Survey Display: Select Processing on the main menu. Select Sonar Image on the drop-down menu. This opens the Sonar Image dialogue box.

  • Page 327: Command References

    Sonar Image 13.4 Command references Overview As previously described, the Sonar Image opens with the Ss real-Time dialogue box, while the sidescan window only presents the graphic result. The settings to be made in the Ss real-Time dialogue box are described on the following pages.
  • Page 328 EM 1002 / Base version The line to be replayed is selected in a similar way as a file is selected from a file selection box. A procedure is presented in the previous chapter. Pixel reduction method This setting is used to select which method to use for representing multiple data values by one pixel.
  • Page 329 Sonar Image Vessel speed The vessel speed, as found in the position datagram, is used for calculation of the alongtrack position (recommended). Position The positions, as found in the position datagram, are used for calculation of the alongtrack scaling. Jump limits These settings are used to define the limits which the system will accept as “jumps”...
  • Page 330 EM 1002 / Base version Average The average of the last measured heading values are used as the line course. The value of the current ping is used to find the rotation of the swath relative to the average line direction found from the last measured heading values.
  • Page 331 Sonar Image The footprint fraction can be set to be any of the above values. 100% represents the same size as the real alongtrack transmit beamwidth. Swath width The width across the entire display (plot) can be set here. This is done by entering the desired width in meters to the right of the label Swath width (m):.
  • Page 332 EM 1002 / Base version Acceptance Start - Press this button to start the display or plot. A new window will be created (if it is not already on the screen) where the Sonar Image is displayed. If the printer option has been selected, the image is also sent to the printer.

  • Page 333: 14 Seabed Viewer

    Seabed Viewer 14 SEABED VIEWER 14.1 Purpose and description The Seabed Viewer is designed to display seabed image data in a scrolling window. It displays one line per ping, and does not perform geographical corrections with regard to the vessel’s heading and speed.

  • Page 334: Operational Procedures

    The Seabed Viewer window is shown in figure 113. 14.3 Operational procedures To start the Seabed Viewer The Seabed Viewer is started from the EM 1002 Launchpad with the dedicated icon. Figure 114 - The Seabed Viewer icon To exit the Seabed Viewer The Seabed Viewer is closed as follows: Select File on the main menu bar.

  • Page 335: Replay Speed

    Seabed Viewer Select Options on the main menu bar. Select Parameters on the pull-down menu. Use the three buttons “tape recorder” buttons in the lower section of the dialogue box for play, stop and fast forward. Replay speed You can control how fast the data are replayed. Select Options on the main menu bar.
  • Page 336 EM 1002 / Base version Select Options on the main menu bar. Select Parameters on the pull-down menu. Set Palette to any of the four options available. 850--160977/E...

  • Page 337: Command References

    Seabed Viewer 14.4 Command references Introduction This chapter describes the various commands used throughout the Seabed Viewer application. The following options are available on the main menu: · File · Options · Help Each of these menu options have a number of commands available on pull-down menus.

  • Page 338: Options

    EM 1002 / Base version 14.5 Options Overview The Options menu on the main menu bar in the Survey Display contains these commands: · Parameters · Realtime Mode · Playback Mode (CD4370) Figure 115 - The Parameter options Parameters When you select Parameters... on the Options menu, a dedicated window opens to present you the choices.
  • Page 339 Seabed Viewer · Screen colours In addition, you have access to the three control buttons for playback mode: · Play · Stop · Fast forward Playback speed Update frequency - This option is only available during playback mode. It specifies how fast data will be replayed. A higher number means faster replay of data.

  • Page 340: Realtime Mode

    EM 1002 / Base version · 6 Colours - Same as 3 Colours, except that six colours are used: blue, cyan, green, yellow, magenta and red. Playback control [PLAY] - Start display of data. This option is only available in Playback Mode.

  • Page 341: 15 Sound Speed Profile Editor

    Sound Speed Profile Editor 15 SOUND SPEED PROFILE EDITOR 15.1 Purpose and overview The purpose of the SSP Editor is to: · Edit or inspect existing sound speed profiles · Create new sound speed profiles The following commands and options are available on the main menu bar: ·...

  • Page 342: The Edit Area

    EM 1002 / Base version Figure 116 - The SSP Editor main window The Edit area The Edit area is the large area on the right hand side of the window. It has two axes: · One horizontal axis along the upper edge of the area with a sound velocity scale.

  • Page 343: Sound Speed Profile Editor

    Sound Speed Profile Editor Only the editable profile can be saved to disk. The two static profiles are only auxiliary profiles used to create new editable profiles. They are read in from the hard disk, may be changed locally in the edit buffers, but can not be saved to disk. The profiles are identified by their colour.

  • Page 344: Communication Area

    File formats The SSP Editor operates on files, and accepts two different file formats: The Kongsberg Simrad Survey format, identified by the sfsvp file name extension, is a binary format used for files generated during logging. These files contain the profiles actually applied in the real-time computations giving each sounding depth and position values.

  • Page 345: Operational Procedures

    In this window, you can view the sound speed profiles. Start and exit To start the SSP Editor The SSP Editor is started from EM 1002 as follows: To exit the SSP Editor The SSP Editor is closed as follows: Select File on the main menu bar.

  • Page 346: Modify And Delete

    EM 1002 / Base version Select New profile if you wish to create a brand new profile from scratch. Place the mouse pointer in the edit area. - It will get a cross hair shape. The depth and speed co-ordinates will be shown as continually updated numbers following the mouse pointer.
  • Page 347 Sound Speed Profile Editor Release the left mouse button when the new location is reached. While the left mouse button is pressed, the mouse pointer will be shaped as a cross-hair, and the depth and speed co-ordinates will be shown as continually updated numbers. Rubber lines connect the point to the neighbouring points on the curve.
  • Page 348 EM 1002 / Base version Click the left mouse button on the point or profile you want to adjust. - The profile is redrawn using the adjusted speed value(s). The mouse pointer keeps its circular shape, and other points may be adjusted in the same way, or the adjustment repeated for the same point or profile.

  • Page 349: Command References

    Sound Speed Profile Editor 15.5 Command references Introduction This chapter describes the various commands used throughout the SSP Editor application. The following options are available on the main menu: · File · Edit · Options · Help Each of these menu options have a number of commands available on pull-down menus.
  • Page 350 EM 1002 / Base version Open Editable This option is used to open a Sound Velocity profile file in order to make changes to it in the edit buffer. The Read SV Profile file selection box appears. This box provides a list of all the available Sound Velocity profile files in the profiles directory.
  • Page 351 Sound Speed Profile Editor This menu command brings up the Save As window which is basically an ordinary file selection box. Click in the Sound Speed Profile text input field, and enter the file name from the keyboard. The asvp file name extension will be appended automatically, unless entered manually.

  • Page 352: Edit

    EM 1002 / Base version Edit Overview The Edit option on the main menu bar contains two commands: · Move point · Add point · Remove point · Adjust velocity · Combine SV profiles · Copy SV profile These menu commands allow you to make changes to the profiles currently existing in one of the three edit buffers.
  • Page 353 Sound Speed Profile Editor ® The Parameters dialogue box and it’s options are described on page 334. ® The procedure is presented on page 327. Combine Sound Velocity Profiles This option is used to create a new profile in the editable profile buffer.

  • Page 354: Options

    EM 1002 / Base version Options Overview Options on the main menu bar contains the choices: · Parameters · Reset Windows · Show Profile Parameters Overview This dialogue box, shown below, is brought up by selecting the Options->Parameters menu command.
  • Page 355 Sound Speed Profile Editor Lock These settings make it possible to prevent the selection of profile points or whole profiles by edit commands. A lock may be set on any of the three profile buffers. A check button is provided for each edit buffer. A check-mark with green background indicates a locked buffer.
  • Page 356 EM 1002 / Base version Apply Press this button to implement the new parameter settings. The edit area is redrawn to reflect any changes in the options or parameter values. The minimum and maximum depths parameters are checked, and a warning will be issued if they are not accepted.
  • Page 357 Sound Speed Profile Editor Help This opens the online-help system. 850-160977/E...

  • Page 358: Introduction

    16.3 Operational procedures How to start Replay This program is started from the EM 1002 by the following procedure; Place the cursor in the background part of the display image in the Common Desktop Environment.

  • Page 359: The Replay Dialogue Box Options

    Replay Figure 119 - The Replay dialogue box The Replay dialogue box options From Survey - This option lists all surveys found in your workstation. You may also enter the survey name directly in the text field. Select lines - This option lets you select all or some lines. When you press the ’...’...

  • Page 360: Replay

    EM 1002 / Base version - Extract Attitude - If an attitude datagram is logged with the rawdata, this option will extract attitude and heading information to survey format attitude and heading files. - Extract EA 500 depths - This option extracts single beam echo sounder depths from raw data.
  • Page 361 Replay The following choices/options appear while converting data; Position timetag from This option lets you choose which timetag to use; - Default - uses original timetag - PU Internal - forces timetag to be from Processing Unit system time. - Pos System - forces timetag to be found inside incoming position datagram.

  • Page 362: Technical Reference

    Introduction This chapter provides basic reference information useful to understand settings and parameters used throughout the EM 1002 system. In order to understand some of the information, you may need to have a more technical background than the average EM 1002 user.
  • Page 363 Technical references EM 1002 coverage, 2 ms pulse length Swath width [m] 1750 1500 1250 1000 Gravel [- -20 dB] Sand [- -30 dB] Mud [- -40 dB] 1000 1200 Depth [m] (CD4241) EM 1002 coverage, 0.2 ms pulse length...

  • Page 364: Bottom Detection

    EM 1002 / Base version 17.2 Bottom Detection Conventional techniques A single beam echo sounder obtains depth by measuring the time a sound pulse takes to propagate to the bottom and multiplying this time value by the mean speed of sound in the water column. Good accuracy depends on: ·...

  • Page 365: Advanced Techniques

    Technical references sidescan systems, an approximate measurement of depth has been achieved by using phase detection through an interferometric principle. By comparing the phase of the returned echo on two or more physically separated transducers, the angle of arrival may be estimated in addition to the range.

  • Page 366: Em 1002 Solution

    EM 1002 solution In the EM 1002, the bottom detection is done as follows: A search in range in each beam is first performed on sample amplitudes to determine where the bottom echo is.

  • Page 367: Error Sources

    Technical references The first round of detections is performed independently in all beams. A filtering of the detections is then done to eliminate spurious detections due to sidelobe echos, echos from fish, noise, etc. The severity of this filtering is determined by menu input from you.

  • Page 368: Echo Sounder Errors

    However, provided that the signal-to-noise ratio is above 10 dB, the following equations have been found to model the depth and acrosstrack position errors of the Kongsberg Simrad multibeam echo sounders very well:   ...

  • Page 369: Motion Errors

    Technical references Here, is the range sampling distance, Ψ is the acrosstrack ∆R beamwidth, and the indexes refer to amplitude and phase detections respectively. The first term in the above equations is due to range error and the second to angular error. The system will usually use phase detection for long echoes (oblique beams) and amplitude detection for short echoes (near-nadir beams).

  • Page 370: Sound Speed Errors

    EM 1002 / Base version Pitch errors Errors in pitch will cause depth and alongtrack errors given by: D∆p ∆z = ∆x = D∆p Heading errors Errors in heading will cause alongtrack errors ( ) and acrosstrack ∆x errors ( ) given by: ∆y...
  • Page 371 Technical references A fixed offset in the sound speed sensor will always give a range error and, if beam electronic steering is used (in which case the beam pointing angle will be in error), also an angular error: ∆R = R∆c ∆c tan(Ô...
  • Page 372 EM 1002 / Base version Sea surface related errors Temporal and position-dependent sound speed variations may be modelled as for sensor errors, except when the sound speed variation is at the surface, or more correctly, at the transducer depth. The resulting error then depends upon transducer configuration, or on how much electronic beam steering is applied.
  • Page 373 Technical references Implications Note that with a horizontally mounted linear (and thus electronically steered) transducer the total error due to varying sound speed at the transducer depth is zero except for a small roll-dependent term. This is because there are two errors involved: 1) the beam pointing angle error 2) the error in the first step of the ray bending calculations Each of these errors has the same magnitude but opposite signs,...
  • Page 374 EM 1002 / Base version Bottom-related errors It may sometimes not be practical to measure the sound speed profile all the way to the bottom and there will usually be an error in the necessary extension of the profile. Another type of bottom-related sound speed problem that can be...

  • Page 375: Range Capability

    Technical references It may also be noted that an inherent limitation in ray bending calculations is that one is usually forced to assume that the sound speed changes only with depth and that any change with position is negligible, at least for a particular beam. 17.4 Range capability The fundamental equation for determining the range capability of...
  • Page 376 = 46.2 − 10 log Ψ Ψ The source level SL for EM 1002, is 226 dB. 850-160977/E...

  • Page 377: Time Varied Gain (Tvg)

    As some of these are bottom dependent, they will be estimated and updated by the EM 1002 system based upon data from previous pings, unless automatic bottom tracking is manually disabled.

  • Page 378: The Vessel Coordinate System

    EM 1002 / Base version 17.6 The vessel coordinate system A main function of the parameters required for system installation is to inform the system of the relative positions between the various sensors and the angular orientation of the sensors with respect to the vessel.
  • Page 379 Technical references Forward position is defined on the X-axis (refer to the illustration below). Locations further forward than the reference point are positive. (CD3514) Figure 122 - Sensor locations (example) Downward position (Z) Downward position is defined on the Z-axis (refer to the illustration above).

  • Page 380: Internal Clock

    EM 1002 / Base version 17.7 Timing Introduction Time synchronization between the echo sounder, the motion sensors and the positioning system is vital in order to achieve the best possible accuracy. The required time synchronization accuracy is better than 5 ms for attitude with roll being the most critical parameter.

  • Page 381: Time Stamping

    Technical references If an external clock is connected on a serial line the input data is time stamped and logged as any other external sensor data. This allows a continuous estimation of any drifts between the two clocks. The setting of the internal clock will be to the time and date from the source, including milliseconds as available.
  • Page 382 EM 1002 / Base version If the variation in the time delay of the positions is too large with respect to the desired accuracy, even after position filtering during postprocessing, an alternative satisfactory solution will require two things: that the positioning system’s own time stamp in the position datagram has a sufficient accuracy;...

  • Page 383: Sound Speed Formulas

    Technical references 17.8 Sound speed formulas The echo sounder computes bottom depth, taking full account of the raybending caused by the variation of sound speed in the water column. The Sound speed profile is entered manually, automatically from a sound speed profile probe, from an external computer, or by a combination of these methods.
  • Page 384 EM 1002 / Base version · For depths greater than 5000 m, a latitude correction should be applied:  c(Z, T, S) = c(0, T, S) + Z′(16.3 + Z(0.22 − 0.003Z T + 2 where: Z’ = Z(1 - 0.0026 cos2Ô) Ô...

  • Page 385: Absorption Coefficient

    Technical references 17.9 Absorption coefficient The mean absorption coefficient of the water column is used in the gain setting in the receiver. A typical value is 30 dB/km (Frequency 95 kHz, surface temperature = 20C and salinity = 30 ppt) The absorption coefficient is important in determining the correct backscattering strength of the seabed used in the seabed imaging.
  • Page 386 EM 1002 / Base version The absorption coefficient equation is from R. E. Francois and G. R. Garrison, ¨Sound absorption based on ocean measurements: Part II: Boric acid contribution and equation for total absorption,¨ J. of Acoust. Soc. Am. 72(6), Dec. 1982, p 1886.

  • Page 387: 18 Main Index

    Operator manual 18 MAIN INDEX The next pages present the main index of this manual. 850-160977/E...
  • Page 388 Operator manual Depth maximum, 116 minimum, 116 Across, status, 105 status, 105 AML Smart Probe, 154 Depth to normal incidence, status, 103 Auto Logging Interval, 96 Disk space, status, 107 Auto Mode Actual Parameters, 103 Echo sounder, Launchpad, 68 Backup All files, 82 Edit enable, 125 Backup files, 82 Enable auto restart, 75...
  • Page 389 Operator manual How to Logging access installation parameters, 24 media, 98 calculate, sound speed profile, 363 parameters, 98 start button, 71 change password, 25 define position delay, 26 stop button, 71 define sensor offsets, 27 Logging selections, status, 106 define TRU interfaces, 27 Login, 8 log in, 8 set the clock, 27...
  • Page 390 Operator manual status, 105 Ping rate, status, 105 Seabed Viewer, Purpose, 313 Pinging Sensor, offsets, 27 off button, 71 start button, 71 Sensor Audio Alarm, 97 Pitch, status, 108 Sensor data, status, 108 Sensor inputs, status, 109 Position delay, 26 Sensors Position quality, status, 109 launchpad field, 70...
  • Page 391 Operator manual Survey file, View, 86 Survey logfile, 86 Survey parameters, 86 Survey format to disk, status, 106 Survey logfile, view, 86 Survey name, 76 Survey parameters, view, 86 Survey Predefined Setups, 76 Window layout, 92 Survey Setup, procedure, 15 Workspace, 72 Swath width, status, 105 launchpad field, 72...
  • Page 392 Operator manual Blank page 850-160977/E...

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