Abstract
LEO spacecraft relative navigation method based on Beidou measurement is researched. A series of tri-frequency combinations have been investigated with the purpose to improve the success rate of double-difference carrier phase ambiguity fixing and relative navigation accuracy. The process algorithms for two kinds of approaches, the kinematic relative navigation approach, and dynamic relative navigation approach, are investigated. The ambiguity fixing performance and relative navigation accuracy are validated using the simulated Beidou-2 regional navigation system scenario. The results showed that the single frequency and wide-lane combination ambiguity fixed rate drops rapidly with increasing baseline length, but S0 ultra-wide-lane combination ambiguity can be 100 % accurately resolved under three different baseline lengths. Concern the relative navigation accuracy, single frequency carrier phase especially B1 carrier phase relative positioning accuracy is highest for short baseline. With the increase of baseline length, the advantage of Beidou multi-frequency ionospheric-free combination gradually revealed: when the baseline length increased to 220 km, the relative positioning accuracy of ionospheric-free combination can increase by 75 % at most.
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This study is funded by the ‘Breeding Project’ of Innovation Academy, Chinese Academy of Sciences.
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© 2016 Springer Science+Business Media Singapore
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Shu, L., Wang, W. (2016). Relative Navigation for LEO Spacecraft Using Beidou-2 Regional Navigation System. In: Sun, J., Liu, J., Fan, S., Wang, F. (eds) China Satellite Navigation Conference (CSNC) 2016 Proceedings: Volume III. Lecture Notes in Electrical Engineering, vol 390. Springer, Singapore. https://doi.org/10.1007/978-981-10-0940-2_4
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DOI: https://doi.org/10.1007/978-981-10-0940-2_4
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