Research on the algorithm of solving the optical axis direction of celestial navigation star sensor

Zhe Wen; Hong-wei Bian; Rong-ying Wang; Heng Ma; Zhong-lei Zhu

doi:10.1117/12.2617344

9 December 2021 Research on the algorithm of solving the optical axis direction of celestial navigation star sensor

Zhe Wen, Hong-wei Bian, Rong-ying Wang, Heng Ma, Zhong-lei Zhu

Proceedings Volume 12030, Third International Conference on Optoelectronic Science and Materials (ICOSM 2021); 1203006 (2021) https://doi.org/10.1117/12.2617344
Event: Third International Conference on Optoelectronic Science and Materials (ICOSM 2021), 2021, Hefei, China

Abstract

Attitude measurement is one of the core problems of celestial navigation, which is based on determining the position of star sensor in space. In order to solve the problem of optical axis pointing of star sensor in celestial navigation, the method of solving the optical axis pointing coordinate of star sensor is studied under the condition of known celestial spherical coordinates of the star and the distance between star image point and image plane center. In particular, considering the different measurement noise of each navigation satellite in the actual measurement, the existing equal-precision algorithm is improved and a weighted geometric solution method is proposed. Finally, the validity and effectiveness of these algorithms are verified by Monte Carlo simulation. The results show that the accuracy of the proposed method is greatly improved compared with the traditional method by allocating appropriate weights when the estimated measurement noise of each navigation satellite is different.

Citation Download Citation

Zhe Wen, Hong-wei Bian, Rong-ying Wang, Heng Ma, and Zhong-lei Zhu "Research on the algorithm of solving the optical axis direction of celestial navigation star sensor", Proc. SPIE 12030, Third International Conference on Optoelectronic Science and Materials (ICOSM 2021), 1203006 (9 December 2021); https://doi.org/10.1117/12.2617344

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