基于STK的星敏感器在轨视场仿真分析  

Simulation Analysis on View Field of Star Sensor Based on STK

作　　者：李晓云[1] 杜伟[2] 刘付强[1] 莫凡[1] 

机构地区：[1]北京空间飞行器总体设计部,北京100094 [2]北京控制工程研究所,北京100080

出　　处：《航天器工程》2013年第2期27-31,共5页Spacecraft Engineering

摘　　要：针对星敏感器在轨可能会受到太阳光、地气光等杂光干扰而影响其测量精度及姿态有效率等问题,对星敏感器的在轨视场进行了分析研究。给出了太阳光、地气光进入星敏感器视场的条件;基于卫星工具包(STK)软件,提出了一种星敏感器视场分析的仿真方法;结合卫星轨道参数和星敏感器安装方位,在卫星零姿态、正负向侧摆下对杂光进入星敏感器视场情况进行了仿真。结果表明,卫星在轨至少有2个星敏感器在同一时刻满足杂光抑制角要求。文章提出的仿真方法,适用于对任何轨道类型卫星星敏感器在轨视场的杂光分析,仿真结果对星敏感器在卫星上的优化安装具有工程应用价值。A star sensor on-orbit may be disturbed by diffuse light such as the sunlight or atmos- phere-earth light, so the attitude accuracy and efficiency of the star sensor will be debased. This paper proposes the analysis and research on view field of star sensor. The conditions of view field of star sensor encountering the sunlight and atmosphere-earth light are established. The simula- tion analysis method on view field of star sensor based on STK is introduced. The view field of star sensors is simulated under a given orbit and fixing angles of star sensors with zero and ±35° roll attitudes. The results show that no less than two star sensors satisfy diffuse light suppres- sion requirement at the same time on-orbit. The simulation method proposed is applicable to ana- lyzing view field of star sensors on the satellites in all kinds of orbit, and the simulation results can be used to optimize the orientation of star sensors installed on the satellite.

关 键 词：卫星 星敏感器 视场 卫星工具包 

分 类 号：V448.2[航空宇航科学与技术—飞行器设计]