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Hybrid Grid Pattern Star Identification Algorithm Based on Multi-Calibration Star Verification
Shen, Chao; Ma, Caiwen; Gao, Wei; Wang, Yuanbo
作者部门空间光学技术研究室
2024-03
发表期刊Sensors
ISSN14248220
卷号24期号:5
产权排序1
摘要

In order to solve the star identification problem in the lost space mode for scientific cameras with small fields of view and higher instruction magnitudes, this paper proposes a star identification algorithm based on a hybrid grid pattern. The application of a hybrid pattern generated by multi-calibration stars in the initial matching enables the position distribution features of neighboring stars around the main star to be more comprehensively described and avoids the interference of position noise and magnitude noise as much as possible. Moreover, calibration star filtering is adopted to eliminate incorrect candidates and pick the true matched navigation star from candidate stars in the initial match. Then, the reference star image is utilized to efficiently verify and determine the final identification results of the algorithm via the nearest principle. The performance of the proposed algorithm in simulation experiments shows that, when the position noise is 2 pixels, the identification rate of the algorithm is 96.43%, which is higher than that of the optimized grid algorithm by 2.21% and the grid algorithm by 4.05%; when the magnitude noise is 0.3 mag, the star identification rate of the algorithm is 96.45%, which is superior to the optimized grid algorithm by 2.03% and to the grid algorithm by 3.82%. In addition, in the actual star image test, star magnitude values of ≤12 mag can be successfully identified using the proposed algorithm. © 2024 by the authors.

关键词star identification hybrid grid pattern reference star map verification multi-calibration star verification
DOI10.3390/s24051661
收录类别EI
语种英语
出版者Multidisciplinary Digital Publishing Institute (MDPI)
EI入藏号20241115750356
引用统计
文献类型期刊论文
条目标识符http://ir.opt.ac.cn/handle/181661/97277
专题空间光学技术研究室
通讯作者Ma, Caiwen
作者单位Xi’an Institute of Optics and Precision Mechanics of Chinese Academy of Sciences, Xi’an; 710119, China
推荐引用方式
GB/T 7714
Shen, Chao,Ma, Caiwen,Gao, Wei,et al. Hybrid Grid Pattern Star Identification Algorithm Based on Multi-Calibration Star Verification[J]. Sensors,2024,24(5).
APA Shen, Chao,Ma, Caiwen,Gao, Wei,&Wang, Yuanbo.(2024).Hybrid Grid Pattern Star Identification Algorithm Based on Multi-Calibration Star Verification.Sensors,24(5).
MLA Shen, Chao,et al."Hybrid Grid Pattern Star Identification Algorithm Based on Multi-Calibration Star Verification".Sensors 24.5(2024).
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