Headwall Nano-Hyperspec Operation Manual page 42

GPS/IMU
start collecting IMU data. This button only starts the IMU data collection, not the image data collection. The following
image shows the GPS output from a motion tracker on a moving platform.
This tool is NOT suitable for piloting a UAV or otherwise defining a flight plan.
Control of any UAV always remains the sole responsibility of the operator. Headwall
provides this tool as a convenient means of configuring the hyperspectral sensor to
capture data at specific points of interest.
Notice in the above image the flight path is shown by the white crosses on the screen. The values in the left panel; speed,
direction, altitude etc. all apply to the current or leading position of the IMU/Nano combination. An important value
displayed by the GPS, is the elapsed flight time, in the field above the Start/Stop buttons. The center panel visually
represents the direction. angle of flight and speed of the motion tracker.
Clicking the Stop button stops the collection of GPS data. It does not effect the operation of a UAV nor does it stop the
scanning process.
When image data collection is started in the capture window, the IMU data collection can be triggered to begin and stop
automatically. If the IMU data collection is started manually it will need to be stopped manually.
The Capture Polygons button is used to define or insert specific areas of scanning interest into the Nano that are triggered
by the GPS function. To use this feature it is necessary to create specific target areas of the desired shape and size for
scanning. These areas are referred to as polygons within this document.
For quality scans and resulting data cubes, Headwall strongly recommends using GPS
triggers with autonomous UAS flight.
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WARNING
Figure 3-3. IMU Operating View.
NOTE