The Attitude and Heading Reference System (AHRS) determines position, orientation, and velocity in GPS-denied environments. It provides redundancy for both manned and unmanned platforms. AHRS operates as a stand-alone inertial unit for medium to large drones. Alternatively, it functions as an integrated component of the Electronic Standby Instrument System (ESIS), serving as an essential backup system for emergency situations.

The system processes data from gyroscopes, accelerometers, and a GNSS receiver. It utilises an Inertial Measurement Unit (IMU) with a 3-axis magnetometer and an air data system to continuously update position and orientation via Kalman filtering. Additionally, its GPS antenna supports multi-system GNSS, delivering precise inertial navigation and accurate flight data.

LPP also employs similar technology in the Inertial Navigation Unit for armoured vehicles and UGVs.