The online estimation of relative alignments for multiple heads star tracker based on the invariability of inter-star angle principle

Ya-zhou Xiong; Yan-peng Wu; Hui-yan Cheng; Da Liu

doi:10.1117/12.2256436

7 November 2016 The online estimation of relative alignments for multiple heads star tracker based on the invariability of inter-star angle principle

Ya-zhou Xiong, Yan-peng Wu, Hui-yan Cheng, Da Liu

Author Affiliations +

Proceedings Volume 10141, Selected Papers of the Chinese Society for Optical Engineering Conferences held July 2016; 101410B (2016) https://doi.org/10.1117/12.2256436
Event: Selected Proceedings of the Chinese Society for Optical Engineering Conferences held July 2016, 2016, Changchun, China

Abstract

In this paper, a real-time calibration method for relative alignments between multiple heads star tracker (MHST) heads based on the invariability of inter-star angle principle is presented. Firstly, the ill effects of relative misalignments on accuracy of MHST attitude based on star-fusion are analyzed. Then, the invariability of inter-star angle principle and the changing feature of relative alignments are applied to build a kalman filtering model to estimate the errors. Finally, a simulation is used to illustrate that the method meets well the real-time requirement of accurate relative alignments of MHST.

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Ya-zhou Xiong, Yan-peng Wu, Hui-yan Cheng, and Da Liu "The online estimation of relative alignments for multiple heads star tracker based on the invariability of inter-star angle principle", Proc. SPIE 10141, Selected Papers of the Chinese Society for Optical Engineering Conferences held July 2016, 101410B (7 November 2016); https://doi.org/10.1117/12.2256436

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KEYWORDS

Head

Stars

Calibration

Error analysis

Thulium

Computer simulations

Image processing

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