摘要
针对受相机视场和转台范围的限制,空间监视卫星可能无法对特定重要LEO目标进行有效观测的问题,提出在接近前根据卫星和目标的相对位置对卫星姿态进行预先调整的方法。通过分析卫星与目标接近期间的方位角和高低角变化情况,得到可用的卫星姿态调整角。用Powell方法以可观测时长为指标对姿态调整角进行了优化,并给出了优化初值的确定方法。仿真结果表明姿态优化能有效提高卫星对目标的可观测时长,方便确定卫星姿态调整角,提高观测能力。
Due to the restriction of field of view and the limitation of servo system, some specific important objects may not be observed by the space - based surveillance satellite. The satellite attitude can be pre - adjusted, which is based on the relative position between satellite and object before conjunction. The available attitude adjusting angle is obtained through analysis of the azimuth and elevation of object to satellite during the conjunction. The attitude adjusting angle is optimized by using the Powell method token the accessible duration as index, and the method for determining the initial value is provided. The results show that the optimization of attitude can improve the accessible duration effectively, the adjusting angle can be determined conveniently and the capability of satellite can be improved by using this method.
出处
《航天控制》
CSCD
北大核心
2017年第1期60-65,共6页
Aerospace Control
关键词
天基空间监视
空间目标
姿态优化
Powell方法
Space - based space surveillance
Space object
Powell method
Attitude optimization
