| 星敏感器中快速星匹配跟踪算法研究 |
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| 引用本文： | 江洁,张广军,李霄,魏新国. 星敏感器中快速星匹配跟踪算法研究[J]. 光电工程, 2007, 34(1): 9-12 |
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| 作者姓名： | 江洁 张广军 李霄 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 , 航空基础科学基金 , 民用航天科技项目 |
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| 摘 要： | 阐述了基于星体中心位置信息匹配的跟踪原理,提出了一种基于匹配的星跟踪方法.采用FPGA实现实时的星点位置信息的获取,解决了传统星跟踪过程中图像数据获取的瓶颈,增加了跟踪星体的个数,加快了匹配跟踪的速度;并且采用先排序后匹配的匹配方法,减少无谓的星体间的比较.仿真测试结果表明,此方法使得匹配跟踪的时间大约降低为原来的10%,提高了整个跟踪算法的计算速度,对星敏感器整体效能的提高也非常明显.
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| 关 键 词： | 星敏感器 匹配跟踪 现场可编程门阵列 目标跟踪 |
| 文章编号： | 1003-501X（2007）01-0009-04 |
| 收稿时间： | 2006-05-20 |
| 修稿时间： | 2006-05-202006-10-19 |
Quick star tracking algorithm for star sensor based on matching |
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| JIANG Jie,ZHANG Guang-jun,LI Xiao,WEI Xin-guo. Quick star tracking algorithm for star sensor based on matching[J]. Opto-Electronic Engineering, 2007, 34(1): 9-12 |
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| Authors: | JIANG Jie ZHANG Guang-jun LI Xiao WEI Xin-guo |
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| Affiliation: | School of Instrument Science and Opto-electronics Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China |
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| Abstract: | The principle of matching on the basis of star centroid was introduced. A star tracking algorithm for star sensor based on matching was presented. The Field Programmable Gate Array (FPGA) technology was adopted to acquire real-time star centroid. The bottleneck of image data acquisition in star tracking was solved, the number of tracking star was increased and the speed of star tracking was improved. Sorting and matching method was applied in the tracking algorithm which reduced meaningless matching between stars. The simulation results show that the matching time is reduced to 10% of the past method, the speed of tracking is improved and the whole efficiency of star sensor is also improved obviously. |
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| Keywords: | Star sensor Matching tracking Field Programmable Gate Array (FPGA) Target tracking |
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