FLIR UltraFORCE 350-HD - Inertial Measurement Unit (IMU)

SYS11000OM Rev G
[UF 350-HD, Generic Template]
FLIR Systems Polytech AB Page 51 of 70
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1.9 Inertial Measurement Unit
1.9.1 Conditions for valid coordinates
 GPS reception.
 Gimbal aiming below horizon.
 Valid heading.
When these conditions are fulfilled target coordinates will be shown in symbol field 12
and 13.
If coordinates in field 12 and 13 are flashing then there is an uncertainty in the navigation
system
1.9.2 Start-up procedure
After start-up of gimbal, wait on ground for five minutes to get the IMU stable, this about
the same time it takes for the IR camera to cool down and show an image. System
restart while airborne is not recommended.
1.9.3 Target altitude
Target altitude can be set in by two different methods. Target manually adjusted altitude
alternative calculated altitude from laser range finder.
To set the manual altitude use “G” encoder on the hand controller. Rotating this encode
will display and change target altitude shown in field 20. The target altitude is in Feet.
When the laser range finder is used to update target altitude target distance and altitude
will be displayed in field 17. Target altitude is updated for every valid range
measurement.
1.9.4 Geo-Target Mode
While the coordinates are valid the operator can press FUNC and track buttons
simultaneous to lock the gimbal to those coordinates. Then the gimbal will aim at this
geographical position, the operator still has the option to move position by thumb joystick
see 1.9.6. To set Geo-Target coordinate see 1.4.11. To exit the Geo-Target mode
activate CAGE mode, STOW mode or press FUNC and Track ones more. If mode is
changed to Tracker Mode the Geo-Target Mod also ends the function.
1.9.5 Heading alignment
INS solution is factory aligned but this alignment might need an adjustment to the
helicopter heading alignment. Contact your FLIR service center if this one time alignment
needs to be changed.
1.9.6 Aimpoint Refinement
When the Geo-Target is engaged and tracking it provides the possibility to move the
Target Point with the Thumb Joystick.