Imu Connection And Orientation; Component Interconnection; Nano Computer Connection - Headwall Nano-Hyperspec Operation Manual

1.3 IMU CONNECTION AND ORIENTATION.

The IMU has internally defined coordinate systems to identify the X, Y and Z coordinates. It also contains an internal
magnetometer that can be disturbed when proximate to power cables which generate a flux field.
The coordinates, x,y,z, are shown in the previous figure and correspond to the local earth-fixed reference co-ordinate
system. This coordinate system is defined as a right handed Cartesian co-ordinate system with:
a. X positive to the East (E).
b. Y positive to the North (N).
c. Z positive when pointing up (U).
The coordinate system is also known as ENU and is the standard in inertial navigation for aviation and geodetic
applications. Note that it is possible to change the coordinate system with respect to the IMU using an alignment matrix or
orientation reset. However, for this manual the default coordinate system will be used.
The IMU is mechanically attached to the Nano-Hyperspec
holes on more than one surface of the unit. The motion tracking device can be mechanically attached to the Nano in a
number of configurations that depend upon how the Nano-Hyperspec
platform. The most common and preferred configuration is shown below in Figure 1-7. This is the position number 2
identified in Figure 1-7. Each customer application of the Nano may have its own preferred configuration with the IMU,
depending upon the platform used and orientation needed.
The IMU is attached to the Nano such that when the Nano is mounted on the moving platform the y axis is aligned with
the body of the platform. When performing initial system set up the y axis should be pointing positive North and the x axis
pointing positive East.
The particular IMU device shipped with the Nano is oriented and factory set in position number 2. This has proven to
optimize results and ortho-rectification processes.

1.4 COMPONENT INTERCONNECTION

1.4.1 Nano Computer Connection.

To set the Nano for remote scanning, connect one end of a Cat 6 cable to the Nano RJ-45 port and the other end to the
computer operating Hyperspec
6 cable. Once the scan is complete, the data from the Nano-Hyperspec
computer for storage and analysis. Reconnect the Nano-Hyperspec
®
on the Nano-Hyperspec and the other to the RJ-45 port of the operating computer. With the computer and Nano powered
®
ON, open the Hyperspec
capture folder and the files will be unpacked and saved.
Figure 1-5. IMU Coordinates.
®
III. Set the parameters for the flight, leave the Nano powered ON and disconnect the Cat
III application and select the File Transfer button. Use the pop up and navigate to the desired
®
with the supplied mounting screws. The Nano has mounting
®
will be mounted to the support or scanning
®
needs to be downloaded to the operating
®
to the computer, with a Cat 6 cable to the RJ-45 port
AIRBORNE PACKAGE
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