Satellite integrated navigation method based on starlight angular distance/laser ranging

doi:10.16708/j.cnki.1000-758X.2022.0037

Abstract

Abstract: In order to improve the accuracy of satellite autonomous celestial navigation, an integrated navigation method combining celestial navigation with laser ranging was proposed.Laser ranging can directly obtain the highprecision distance information from satellite to ground reference beacon.The usage of laser ranging auxiliary data in astronomical navigation system with star angular distance as observation measurement can expand the dimension of filter observation and improve the filtering effect.Since the integrated navigation system is a nonlinear system, in order to avoid the second-order truncation error caused by the linearization of Taylor expansion, the UKF filtering method was used for the information fusion of integrated navigation system.Simulation results show that the proposed integrated navigation method can significantly improve the navigation accuracy and filter performance.

Key words: celestial navigation, laser ranging, filtering, information fusion, integrated navigation

LI Daiwei, DAN Peng, HE Boyong, CHEN Yuchang, ZHANG Yinfa, SHI Feng. Satellite integrated navigation method based on starlight angular distance/laser ranging[J]. Chinese Space Science and Technology, 2022, 42(3): 67-73.

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URL: https://journal26.magtechjournal.com/kjkxjs/EN/10.16708/j.cnki.1000-758X.2022.0037

https://journal26.magtechjournal.com/kjkxjs/EN/Y2022/V42/I3/67

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Satellite integrated navigation method based on starlight angular distance/laser ranging

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