Kongsberg Simrad SN90 Reference Manual page 541

Purse seine and trawling sonar
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Note
The views are "linked" together. If you, for example, enable Depth in one Horizontal
view, it appears automatically in all other Horizontal views in the different presentation
modes.
The following information can be provided:
Current
A current sensor can be connected to the SN90 system. This can for example be an
acoustic Doppler current profiler (ADCP). You can read the numerical value of the
water current's velocity (the vector information) in the view's bottom right corner.
Bearing / Distance / Depth
The position (bearing and distance) and depth of the cursor's location is shown in
the lower right corner of the view. The depth is calculated from the current tilt and
the distance from the vessel.
Manual Track
You can start manual tracking by placing multiple markers on a target echo that
moves in the view. One or more markers can be placed in the view to identify
specific echoes.Each marker is shown as a small triangle with or without a short
identifying label. You can see the latest marker's course and speed in the view's
lower right corner. The values are calculated based on the last two markers you
created and the time between them.
1
Place the cursor on the object you wish to be marked.
2
Right-click and select
3
Create a new marker.
The
Track Course
the previous marker you created. The physical location of the individual markers
and the specific information provided for the latest marker show you the historical
path of the chosen target.
Tip
Once an echo has been provided with a marker in the display presentation it is
regarded as an object. The
includes all types of objects including those classified as targets.
Related topics
Setting up presentation modes and views, page 144
Functions and dialog boxes, page 416
Display menu: functions and dialog boxes, page 438
Display Options dialog box, page 444
381294/E
Place Marker
,
, and
Track Speed
Track Distance
menu provides a list of all current objects. This
Objects
Functions and dialog boxes
on the shortcut menu.
values offered now relate to
539

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