AMR navigation systems and methods of their calibration

The article deals with fully digital navigation system based on AMR sensors and accelerometers. It provides information about actual azimuth, roll and pitch. The developed navigation system as well as the methods of error calibration and then compensation is described. The article is especially focused on calibration of errors caused by sensors deviations from orthogonal directions and sensor triplets deviations. The advantage and comparisons of gimbaled and non-gimbaled navigation system will be also discussed.