基于几何位置分析的星敏感器布局研究

针对对地三轴稳定卫星中存在的杂散光严重影响星敏感器测量精度和准确性的问题，在研究日-地-月-星的几何位置的基础上，结合卫星的姿态信息、星敏感器的安装位置，以及视场范围，分析了卫星在轨运行过程中太阳光、月球反射光对星敏感器的影响。此外，根据星敏感器的布局设计状况，探讨给出不同时刻推荐使用的星敏感器方案，进而有效避免杂散光对星敏感器的影响。

Research on star sensor layout based on geometric position analysis

Aiming at problem of measurement precision and accuracy of star sensor is seriously affected by stray light existed in geocentric pointing three-axis stabilized satellite, analyze influence of the sunlight and the moon reflected light impact on star sensor during the satellite on-orbit running, on the basics of study on geometric position of the Sun, the Earth, the Moon and the satellite, combine several elements including the satellite attitude information, the star-sensor installation location and field of vision （FOV）. Moreover, according to the layout of star sensor, recommend plans at different time are discussed and given, which can avoid influences of stray light on star sensor effectively.