Analysis of Scan Mirror Motion and Its Compensation for Three-Axis-Stabilized Satellite

摘要

In this paper, the problems of scan mirror motion and its compensation for three-axis-stabilized satellite are studied. Simulating calculations are performed to illustrate the accumulation of scanning deviation due to the effect of satellite attitudes. Then a motion compensation scheme for scan-mirror is proposed by modifying the governing equations of scan-mirror motions. With this scheme, the compensated scanning tracks and azimuth of scan-mirror optical axis are obtained and compared with uncompensated results. The results show that the accumulation of scanning deviation can be eliminated and the maximum value of azimuth deviation is far lower than 2.8 μrad.