Spatial FOG Reference Manual
Page 73 of 144
Version 2.3
03/05/2018
11.8.4
Alignment Configuration
The alignment configuration dialogue is used to set the alignment ofsets of the
system installation. It is important to set the values in this dialogue correctly for
accurate results. For most applications only the GNSS antenna ofset values need to be
entered and the rest of the values can be left at their factory defaults of zero.
11.8.4.1
Alignment Ofset
If Spatial FOG is installed into the vehicle with the X axis pointing forwards and the Z
axis pointing down, then no alignment ofset is required and the roll, pitch and heading
ofset values can remain at the factory defaults of zero.
If the unit is installed in a diferent orientation then the roll, pitch and heading ofset
must be entered. For example if the unit is installed on its side with the X axis pointing
up and the Z axis pointing forwards and no change to the Y axis, then this would result
in a pitch ofset of +90 degrees with roll and heading remaining zero.
If there is a small misalignment due to mechanical mounting error this can be
compensated for by setting the vehicle stationary on a level surface and pressing the
zero current orientation button. Please note that this will only correct for roll and pitch
ofsets, the heading ofset must be entered manually and saved before using this
function.
All the other ofsets will be measured in the realigned body co-ordinate frame (X
positive forward, Z positive down) after being corrected for any alignment ofset
entered.
Illustration 51: Screenshot of Spatial FOG Manager alignment
configuration dialogue
