Spatial FOG Reference Manual
Page 45 of 144
Version 2.3
03/05/2018
10.4.4
External Heading
External heading can be used if there is some other way to derive heading that is
external to Spatial FOG. Examples include dual antenna GNSS systems, reference
markers and SLAM systems. The heading must be fed into Spatial FOG using the
External Heading Packet or through NMEA into a GPIO pin.
Illustration 23: Mechanical drawings of Spatial FOG dual antenna upgrade unit
Illustration 24: Spatial FOG dual antenna upgrade cable diagram