传感技术学报2017，Vol.30Issue(8)：1145-1151,7.DOI:10.3969/j.issn.1004-1699.2017.08.002
面向微小卫星的星敏感器研究
Research on StarTracker for Micro-Satellites
摘要
Abstract
A new design of star tracker(ST)is proposed.The STisbased on the using of commercial devices,to matchMicro-satellites' compact size.The STconsists of an industrial lens,a DSP processor,a low power CPLD and a grayscale CMOS sensor.To improve the measurement accuracy,theimaging model of the STis analyzed,andthe optical parameters are compensated by in-field star calibration.The algorithm of star photoprocessing is also analyzed,anda median filter is applied to reduce the effect ofimpulse noise during star point extracting.A ST prototype is tested with field experimentsbased on the earth's rotation and constellation tracking,the results show that the prototype's RMSE(Root Mean Square Error)of Euler angleis 30″.The prototype,whichis in compact size and low power consumption,can be exactly applied to Micro-satellites.关键词
星敏感器/微小卫星/姿态确定Key words
star tracker/micro-satellite/attitude determination分类
航空航天引用本文复制引用
李赓,王昊,金仲和,王本冬..面向微小卫星的星敏感器研究[J].传感技术学报,2017,30(8):1145-1151,7.基金项目
国家杰出青年基金项目(61525403) （61525403）
