| 一种星敏感器中快速星跟踪方法 |
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| 引用本文： | 江洁,李霄,张广军,魏新国.一种星敏感器中快速星跟踪方法[J].宇航学报,2006,27(5):952-955. |
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| 作者姓名： | 江洁 李霄 张广军 魏新国 |
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| 作者单位： | 北京航空航天大学,仪器与光电工程学院,北京,100083 |
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| 基金项目： | 航天部航天创新基金;民用航天科技项目;航空基础科学基金 |
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| 摘 要： | 提出了一种快速星跟踪算法。在跟踪算法的三个耗时环节，分别采用，分区星表，阈值映射，先排序后匹配识别这三种方法，以提高跟踪过程的快速性。其中分区星表法将整个天区分成了若干个子天区；阈值映射法，设置被跟踪星体的数量阈值，减少映射次数；先排序后匹配识别法，减少了那些距离较大的无谓的星体间的匹配识别。对星跟踪算法进行软硬件仿真测试，在软件仿真测试中，测试了跟踪算法的正确性和成功率。在硬件仿真测试中，测试了跟踪算法在一个跟踪过程中每步的跟踪速度及影响跟踪速度的主要因素。
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| 关 键 词： | 星敏感器 星跟踪 匹配识别 跟踪算法 |
| 文章编号： | 1000-1328（2006）05-0952-04 |
| 收稿时间： | 05 15 2006 12:00AM |
| 修稿时间： | 2006-05-152006-07-20 |
A Fast Star Tracking Method in Star Sensor |
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| JIANG Jie,LI Xiao,ZHANG Guang-jun,WEI Xin-guo.A Fast Star Tracking Method in Star Sensor[J].Journal of Astronautics,2006,27(5):952-955. |
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| Authors: | JIANG Jie LI Xiao ZHANG Guang-jun WEI Xin-guo |
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| Institution: | School of Instrument Science and Opto Electronics Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China |
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| Abstract: | A fast star tracking algorithm is proposed.In order to speed up the star tracking,three techniques including star catalogue partition,threshold mapping and sorting & matching are designed for three time-consuming portions in tracking algorithm,.Star catalogue partition divides the celestial sphere into small partitions.Threshold mapping sets a threshold of stars tracked which reduces mapping times.Sorting and matching avoided matching between stars which have a long distance.The software and hardware performance of tracking algorithm are stimulated.Tracking effectivness and the success rate under different position noises are tested in software stimulation.In hardware stimulation,the tracking speed in every step and factors influencing tracking speed are tested. |
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| Keywords: | Star sensor Star tracking Matching identification Tracking algorithms |
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