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基于多视场星敏感器的姿态确定方法
引用本文:曾芬,刘金国,左洋,武星星,陈佳豫.基于多视场星敏感器的姿态确定方法[J].应用声学,2015,23(2).
作者姓名:曾芬  刘金国  左洋  武星星  陈佳豫
作者单位:中国科学院长春光学精密机械与物理研究所,中国科学院长春光学精密机械与物理研究所,中国科学院长春光学精密机械与物理研究所,中国科学院长春光学精密机械与物理研究所,中国科学院长春光学精密机械与物理研究所
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目)
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。

关 键 词:星敏感器  多视场  QUEST算法  姿态确定  坐标转换

Attitude Determination Method Based on Multiple Fieldsof View Star Sensor
Abstract: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.
Keywords:star sensor  multi-FOV  attitude determination  QUEST algorithm  coordinate transformation
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