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Journal of the Korea Institute of Military Science and Technology 2008;11(6):30-37.
The Improvement Method of ARS Attitude depeding on Dynamic Conditions
Chan-Ju Park, Sang-Jeong Lee
1
2CNU
기동특성에 따른 ARS 자세 성능향상 기법
박찬주, 이상정
1국방과학연구소
2충남대학교
Abstract
The ARS(Attitude Reference System) calculates an attitude of a vehicle using inertial angular rate sensors and acceleration sensors. The attitude error of ARS increases due to the integration of angular rate sensor output. To reduce the attitude error an acceleration of sensor is used similar to leveling method of INS(Inertial Navigation System). When an acceleration of vehicle is increased, it is difficult to calculate the attitude error using acceleration sensor output. In this paper the estimation method of acceleration due to the attitude error only is proposed. Two methods of the attitude calculation depending on vehicle dynamics and the integration method of these two methods are proposed. To verify its performance the monte carlo simulation is performed and shows that it bounds attitude error of ARS to reasonable level.
Key Words: ARS, Kalman Filter
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