| 基于星联合分布的星图识别 |
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| 引用本文： | 姜笛,张科,DEBEIR Olivier.基于星联合分布的星图识别[J].系统工程与电子技术,2018,40(1):127-131. |
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| 作者姓名： | 姜笛 张科 DEBEIR Olivier |
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| 作者单位： | 1. 西北工业大学航天学院, 陕西 西安 710072; 2. 法语布鲁塞尔自由大学图像、信号处理及声学实验室, 比利时 布鲁塞尔 1050; 3. 西北工业大学航天飞行动力学国家级重点实验室, 陕西 西安 710072 |
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| 摘 要： | 针对栅格类算法中难以合适选取栅格尺寸的缺点,设计了将星图划分为多个多边形的划分方法,使星图中所有星都位于与其唯一对应的多边形中,提取多边形几何特征,对导航星库和观测星图的特征模式进行匹配。根据仿真数据进行验证,表明这一方法避免了栅格类算法中可能使多颗星位于同一栅格中的现象,同时也克服了栅格类算法不能正确选取定位星进而使星图识别失败的缺点,有效提升了星图识别的准确度。
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Star image recognition based on mutual star distribution |
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| JIANG Di,ZHANG Ke,DEBEIR Olivier.Star image recognition based on mutual star distribution[J].System Engineering and Electronics,2018,40(1):127-131. |
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| Authors: | JIANG Di ZHANG Ke DEBEIR Olivier |
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| Institution: | 1. College of Astronautics, Northwestern Polytechnical University, Xi’an 710072, China; 2. Laboratories of Image, Signal Processing and Acoustics, Université libre de Bruxelles, Brussels 1050, Belgium; 3. National Key Laboratory of Aerospace Flight Dynamics, Northwestern Polytechnical University, Xi’an 710072, China; |
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| Abstract: | A novel method is designed to divide the star image into polygons, in order to solve the problem of setting the grid size in the grid algorithm. Via the method, each star islocated in a corresponding polygon. The geometric features of these polygons are extracted and applied for matching the feature patterns of the guidance star database and theobserved star image. Simulations indicate that the novel method removes the possible phenomenon in the grid algorithm where more than one star are located in the same grid. Thegrid algorithm’s disadvantage of recognition failure resulting from identifying incorrect close neighbor star for reference star can be overcome and the accuracy of star imagerecognition is greatly improved. |
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