CCD星跟踪器  

CCD Star Tracker

作　　者：郝志航 王家骐 

出　　处：《光学机械》1991年第6期73-78,共6页

摘　　要：自七十年代以来,CCD星跟踪器在各种航天飞行器上得到越来越广泛的应用。本文叙述了XG-1型CCD星跟踪器的设计思想,系统结构和工作原理。整个系统的工作由单片微计算机控制;由于采用了内插细分的矩心算法,XG-1 CCD星跟踪器达到了亚象元精度。实验结果说明,在视场角为2°×2°时,测量精度优于2角秒。系统具有多星跟踪的功能,可以稳定跟踪+6.4等恒星。CCD star tracker has developed rapidly for various sp- ace application since 1970's. This paper describes design consideration, system construction, and operation princple of XG-1 CCD star tracker developed in CIOFM.In the sy- stem a single-chip computer is used to control CCD integ- ration time and threshold selection. Due to centroiding algorithm is adopted the subpixel accuracy is obtained.The test results given in the end of this paper show that sta- tionary accuracy of the star tracker is better than 2 arcsec (rms) and the stars with magnitude of 6.4 can be tracked steadily.

关 键 词：CCD 星跟踪器 矩心算法 电荷耦合器件 计算机控制 系统结构 

分 类 号：TN965[电子电信—信号与信息处理]