静止轨道上自旋稳定卫星的姿态受扰动力矩影响而发生变化。因此,需要监视卫星姿态变化,进行姿态保持的管理工作。对日本实用通信卫星(樱花2号 a)地球敏感器数据分析的结果表明,卫星自旋轴轨迹以1日为周期做周期变动。先用较好的敏感器数据估算了卫星自旋轴方向。然后,对已估算的数据进行统计处理,求出自旋轴方向的偏差分布。 The attitude of the spin-stable satellite on the geostationary orbit changes with the disturbance torque. Therefore, the need to monitor satellite attitude changes, attitude management to maintain. The results of the earth sensor data analysis of the Japanese utility communication satellite (Sakura 2 a) show that the satellite spin axis trajectory changes periodically with a period of one day. First use the better sensor data to estimate the direction of satellite spin axis. Then, the estimated data are statistically processed to find the deviation distribution in the direction of the spin axis.