Capture Function - Headwall Nano-Hyperspec Operation Manual

AIRBORNE PACKAGE
Number
GPIO ID
Edge
Frames per Cube
2
Max Cubes
Trigger to toggle
capture
GPIO ID
3
Edge
For most applications, using the Xsens IMU from Headwall, users can perform the manual triggering with the GPIO ID
set for the IMU and the GPIO External Trigger selected. The External Trigger is used to toggle captures when check box
selected. One pulse starts the capture, the second pulse stops the capture.
When using the Applanix IMU, the GPIO PPS needs to be identified. This will generate the time stamp for the IMU files.
The GPIO ID in the GPIO PPS sections needs to be selected.
While the functionality allows for manual operation of the unit, users are strongly encouraged to develop UAS
autonomous flight plans and use the GPS triggering function.

1.6.2 Capture Function.

When the UAS is set to fly the polygon scanning method, the Enable GPS Trigger in the Capture window needs to be
selected.
The result of using the GPS triggering is improved scans. When the platform flies outside the polygon boundary the
capture stops, and the data cube is not influenced by the rotation and orientation maneuvers of the platform.
1-18
Table 1-3. Sensor Settings
Function
Select wire used for trigger function, 0.170 is commonly used
Defines reading of rising or falling edge or both
Maximum Frames per scanned cube
Maximum cubes per scan
Check to enable external triggering, It is a toggle function, one pulse
Start, next pulse Stop.
Select wire used for trigger function, 0.170 is commonly used, used
to define time stamp from IMU.
Defines reading of rising or falling edge or both
Figure 1-21. Nano Capture Window.
Operational Settings