Intelligent Fibre-Optic Gyro (iFG)
The Tritech iFG (Intelligent Fibre-Optic Gyro) provides additional heading stability when combined with the Tritech Intelligent Gyro Compass (iGC), or other heading and motion reference units (MRUs).
The iFG uses a single-axis FOG sensor, mounted inside an extruded aluminum housing and can typically reduce heading drift errors more effectively than most magnetically referenced aircraft gyros. It provides internal compensation for pitch and roll angles using data from the iGC attitude sensors.
Additional (external) interface cards are available when an iGC/ iFG is fitted to existing ROVs to replace a mechanical gyro compass. This provides specific communication protocol compatibility and analogue (autopilot) functionality.