高精度星敏感器标定方法研究  

Calibration method of high-accuracy star sensor

作　　者：易敏 邢飞[2] 孙婷[1] 王宏 Yi Min Xing Fei Sun Ting Wang Hong(Joint International Research Laboratory of Advanced Photonics and Electronics, Beijing Information Science ＆ Technology University, Beijing 100192, China Department of Precision Instruments, Tsinghua University, Beijing 100084, China)

机构地区：[1]北京信息科技大学先进光电子技术国际合作联合实验室,北京100192 [2]清华大学精密仪器系,北京100084

出　　处：《仪器仪表学报》2017年第9期2154-2160,共7页Chinese Journal of Scientific Instrument

基　　金：国家自然科学基金(61605099);北京市未来芯片技术高精尖创新中心科研基金(KYJJ2016002);"青年人才托举工程"2016-2018年度项目(2016QNRC001)资助

摘　　要：星敏感器是一种广泛应用在航天飞行器中的高精度姿态测量器件,精度标定是保证高精度测量的重要环节。为了尽量提高星敏感器的整体精度,对传统星敏感器标定方法进行了仿真分析,针对传统星敏感器标定方法模型参数难以解耦的弊端,提出单独标定主点,将星敏感器光学参数误差(如焦距、成像平面倾斜和畸变)等看作一个整体误差源,采用直接映射的方式进行标定。该方法简单方便、标定精度高,避免了传统方法中误差影响因素分析不全面及多次求取拟合近似值造成的累积误差。实验结果表明,该标定方法完全满足测量角误差2″的要求。Star sensor is a high precision attitude essential for the high precision measurement of star sensor t instrument widely used in spacecraft. The star sensor＇ calibration is very In order to improve the overall accuracy of the star sensor, a simulation analysis is carried out for the traditional star sensor calibration method. The model parameters are difficult to decouple for the traditional star sensor calibration. To solve this issue, a direct mapping calibration method is proposed in which the focal length, imaging plane tilt and distortion, etc. as a whole parameter are calibrated. This simple method can achieve higher accuracy, which avoids the shortcomings caused by the error analysis of the traditional method. Experimental results show that the calibration method fully meets the system requirements of 2＂.

关 键 词：光学参数 高精度 标定 整体误差源 直接映射 

分 类 号：TH7[机械工程—仪器科学与技术]