环月卫星成像敏感器对月姿态确定算法  

Attitude Determination Algorithm Used by Lunar Satellite′s Imaging Sensor

作　　者：王立[1] 郝云彩[1] 

机构地区：[1]北京控制工程研究所,北京100080

出　　处：《中国空间科学技术》2006年第6期14-17,41,共5页Chinese Space Science and Technology

摘　　要：紫外月球敏感器是大视场成像式敏感器,针对姿态确定算法,以MOSAIC可见光成像敏感器为例分析了传统圆拟合模式的适用性与不足;推证出在低轨道情况下曲线拟合出的月像几何中心与真实月心(nadir)不能等同;依据成像几何分析通过泰勒展开公式推导并提出了新的姿态角运算方法,保证了低轨道姿态运算精度;仿真结果显示新算法的姿态运算是非常有效的。Ultraviolet lunar sensor is an imaging attitude sensor which has the wide FOV. Aiming at the attitude determination algorithm, analyzed the validity and limitation of the conventional circle algorithm used by MOSAIC Sensor. Pointed out that the geometric center of lunar image can＇t be regard as the nadir point in the low orbit. A new algorithm was developed throw the tailor equation based on the imaging analysis. The new algorithm can supply the high precise attitude data even in the low orbit. The simulation results prove this algorithm is valid.

关 键 词：敏感器 姿态确定 月球探测器 成像 

分 类 号：V448.22[航空宇航科学与技术—飞行器设计]