Design and application of star map simulation system for star sensors

摘要：

　　Modern star sensors are powerful to measure attitude automatically which assure a perfect performance of spacecrafts.They achieve very accurate attitudes by applying algorithms to process star maps obtained by the star camera mounted on them.Therefore,star maps play an important role in designing star cameras and developing procession algorithms.Furthermore,star maps supply significant supports to exam the performance of star sensors completely before their launch.However,it is not always convenient to supply abundant star maps by taking pictures of the sky.Thus,star map simulation with the aid of computer attracts a lot of interests by virtue of its low price and good convenience.A method to simulate star maps by programming and extending the function of the optical design program ZEMAX is proposed.The star map simulation system is established.Firstly,based on analyzing the working procedures of star sensors to measure attitudes and the basic method to design optical system by ZEMAX,the principle of simulating star sensor imaging is given out in detail.The theory about adding false stars and noises,and outputting maps is discussed and the corresponding approaches are proposed.Then,by external programming,the star map simulation program is designed and produced.Its user interference and operation are introduced.Applications of star map simulation method in evaluating optical system,star image extraction algorithm and star identification algorithm,and calibrating system errors are presented completely.It was proved that the proposed simulation method provides magnificent supports to the study on star sensors,and improves the performance of star sensors efficiently.

关键词： Star map simulation Star sensor Program designing Attitude measurement

作者: Feng Wu Weimin Shen Xifang Zhu Yuheng Chen Qingquan Xu

作者单位: School of Electronic Information & Electronic Engineering,Changzhou Institute of Technology,Changzho Institute of Modern Optical Technology,Soochow University,Suzhou,215006,China School of Optoelectronic Engineering,Changzhou Institute of Technology,Changzhou,213002,China

会议类型: 国际会议

会议名称: 2013 International Conference on Optical Instrument and Technology (OIT’2013)(2013年光学仪器与技术国际会议)

会议地点: 北京

会议语种:英文

页码: 1-9

在线出版日期: 2013-11-17（万方平台首次上网日期，不代表论文的发表时间）