Star sensor calibration method based on the SPGD algorithm

Liheng Ma; Chunsheng Sun; Xiaohui Zhang; Qingping Hu

doi:10.1117/12.2539569

18 December 2019 Star sensor calibration method based on the SPGD algorithm

Liheng Ma, Chunsheng Sun, Xiaohui Zhang, Qingping Hu

Proceedings Volume 11341, AOPC 2019: Space Optics, Telescopes, and Instrumentation; 1134107 (2019) https://doi.org/10.1117/12.2539569
Event: Applied Optics and Photonics China (AOPC2019), 2019, Beijing, China

Abstract

Calibration of the intrinsic parameters of a star sensor before and after its launch is essential. The existing techniques have not taken the centroiding error into consideration thoroughly. Meanwhile, the calibration operation is complex. Based on the principle of the SPGD algorithm, a calibration method fully considering the star image centroiding error is proposed in this work. Simulation result indicates that the intrinsic parameters are calibrated out and kept constantly after tens of iterations. The accuracy of principle point of the proposed SPGD based method is 4 times as the IAICM. As for the focus length, the accuracy is improved by 6 times compared to the IAICM. Simultaneously, the calibration operation becomes extremely simple

Citation Download Citation

Liheng Ma, Chunsheng Sun, Xiaohui Zhang, and Qingping Hu "Star sensor calibration method based on the SPGD algorithm", Proc. SPIE 11341, AOPC 2019: Space Optics, Telescopes, and Instrumentation, 1134107 (18 December 2019); https://doi.org/10.1117/12.2539569

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KEYWORDS

Calibration

Star sensors

Stars

Sensor calibration

Distortion

Sun

Control systems

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