Attitude
& Heading Reference System(AHRS)
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Product Outline
The orientation of a vehicle commonly referred to as attitude, can be of considerable interest. In the case of airborne wind measurement, aircraft attitude data is necessary to express airflow measurements made in a frame of reference fixed to the aircraft with respect to a ground-fixed reference.In the event of airborne imaging, the orientation of the aircraft platform is necessary to infer the precise location of points imaged on the ground from the three-dimensional position of the aircraft. Precise vehicle attitude information is valuable in many other applications across airborne, land and marine based platforms.
Aventech's Attitude and Heading Reference System (AHRS) relies on the combination of GPS differential carrier-phase signals and inertial rates that are standard within the AIMMS product line. Three AIMMS modules comprise the AHRS: the dual-processor GPS module, the IMU module and the Central Processing Module (CPM), where the CPM is loaded with AHRS-specific firmware. By fusing the absolute precision of GPS carrier-phase analysis with the responsiveness of inertial sensors, the AHRS is well suited for dynamic platforms where robustness of the solution is paramount in an environment with highly variable GPS signal quality.