제어로봇시스템학회:학술대회논문집
- 제어로봇시스템학회 1995년도 Proceedings of the Korea Automation Control Conference, 10th (KACC); Seoul, Korea; 23-25 Oct. 1995
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- Pages.110-114
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- 1995
Attitude determination for three-axis stabilized satellite
- Kim, Jinho (Dept. of Aerospace Eng., Inha Univ.) ;
- Lew, Changmo (Dept. of Aerospace Eng., Inha Univ.)
- 발행 : 1995.10.01
초록
This paper presents the on-board attitude determination algorithm for LEO (Low Earth Orbit) three-axis stabilized spacecraft. Two advanced star trackers and a three-axis Inertial Reference Unit (IRU) are assumed to be attitude sensors. The gyro in the IRU provides a direct measurement of the attitude rates. However, the attitude estimation error increases with time due to the gyro drift and noise. An update filter with measurements of star trackers and/or sun sensor is designed to update these gyro drift bias and to compensate the attitude error. Kalman Filter is adapted for the on-board update filter algorithm. Simulation results will be presented to investigate the attitude pointing performance.