摘要
星敏感器是目前航天器姿态测量精度最高的器件,与传统的单视场星敏感器相比,多视场星敏感器可以实现三轴同样高精度的姿态测量,提高姿态测量精度;针对单视场星敏感器姿态确定问题,推导了以最小代价函数为指标的QUEST姿态确定算法;对于多视场星敏感器,通过坐标变换方法将多个视场的导航星矢量转换到同一视场中,再利用QUEST算法得到航天器姿态;最后仿真结果表明,坐标变换后进行姿态确定得到的姿态数据与单个视场所得的姿态数据相同,验证了方法的正确性。
Star sensor have the highest spacecraft attitude determination accuracy,compared with traditional single FOV star sensor,multi-FOV （multiple fields of view） star sensor can achieve the same high-precision for three-axis attitude measurement,hence improving the attitude measurement accuracy.In order to identify attitude of single FOV star sensor,the QUEST attitude determination algorithm,with the minimum cost function as an indicator,is deduced.For multi-FOV star sensor,vectors of navigation stars in multi-FOV can be transformed into the same field through coordinate transformation method,and then attitude of spacecraft can be achieved using QUEST algorithm.Finally simulation results show that attitude of spacecraft determined by the stated method coordinate well with that determined by single field of view,thus verifying the validity of the method.
出处
《计算机测量与控制》
2015年第2期548-550,共3页
Computer Measurement &Control
基金
国家自然科学基金(61108066)
吉林省科技发展计划项目(20130101028jc)
关键词
星敏感器
多视场
QUEST算法
姿态确定
坐标转换
star sensor
multi-FOV
attitude determination
QUEST algorithm
coordinate transformation
