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飞控与探测:2025,8(5):81-87
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一种基于斐波那契网格的干涉星敏感器星库设计方法
(1.上海航天控制技术研究所;2.上海市空间智能控制技术重点实验室)
Design Method of Star Catalog for Interferometric Star Sensor Based on Fibonacci Grid Points
(1.Shanghai Aerospace Control Technology Institute;2.Shanghai Key Laboratory of Aerospace Intelligent Control Technology)
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中文摘要: 导航星表构建是星敏感器系统设计阶段的重要工作。干涉式星敏感器基于莫尔条纹的相位测量入射角,只保留了部分干涉级次,导致了像点能量低;分光组件将一束星光分割成多个像点,像点能量进一步减弱,同时多个像点形成的像点组占据的像素空间变大,导致相邻过近的星点无法分辨。为了建立适用于干涉式星敏感器的星表,通过设定角距阈值进行星表初次筛选,剔除暗星、变星以及角距太近的双星;为了保证星表分布的均匀性,采用斐波那契网格点作为球面基准点,依托基准点进行星表二次筛选。最终得到的星表数量较少,且均匀性较好,可以满足干涉式星敏感器需求。
Abstract:The construction of navigation star list is an important task in the design stage of star sensor system. Because the interferometric star sensor only retains part of the interference order, the energy of the image point is low. The spectral component divides a beam of starlight into multiple image points, the energy of the image points is further weakened, and the pixel space occupied by the image points formed by multiple image points becomes larger, resulting in the inability to distinguish the adjacent star points that are too close. In order to establish the star list suitable for interferometric star sensor, by setting the threshold of angular distance, the list is screened for the first time, and dark stars, variable stars and binary stars with too close angular distance are excluded. In order to ensure the uniformity of the catalog, Fibonacci grid points are used as spherical reference points, and the secondary screening of the catalog is carried out based on the reference points. The result shows that the number of stars is small and the uniformity is good, which can meet the demand of interferometric star sensor.
文章编号:20250509     中图分类号:TN911.73; TP391.9    文献标志码:A
基金项目:国家重点研发计划课题(2019YFA0706003,2019YFA0706002)
引用文本:
郭放,叶志龙,杜伟峰,郑循江.一种基于斐波那契网格的干涉星敏感器星库设计方法[J].飞控与探测,2025,8(5):81-87.