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Influence Analysis of Multi-LEO Augmentation MEO Satellite Orbit Determination Under Regional Station Layout

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China Satellite Navigation Conference (CSNC) 2020 Proceedings: Volume II (CSNC 2020)

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Abstract

Since the ground monitoring stations layout for BeiDou navigation satellite system (BDS) is regional, the problem of bad orbit precision of BDS satellites needs to be resolved. Many scholars propose to use the low earth orbit (LEO) spaceborne observations to enhance the precise orbit determination (POD) of navigation satellites. In this contribution, the orbit determination enhancement of global positioning system (GPS) is researched by adding three LEOs under the Asia-Pacific regional station distribution based on measured data. Combining the three LEOs, GRACE-A, HY2A, Jason-2 and 6, 10 and 20 regional stations, respectively, four experimental designs are processed: the ground-only POD, the combined POD with ground stations and 1, 2 and 3 LEOs, respectively. Results show that the improvement of GPS satellite orbits is excellent when adding LEO GPS data, with the biggest percentage of 72.6%. The less ground stations and adding the more LEOs, the improvement of orbit precision is bigger. When joining in different types of LEO, the more LEOs, the improved differentiation is more obvious.

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Acknowledgements

IGS is gratefully acknowledged for providing GPS data. The research was substantially funded by State Key Laboratory of Geo-Information Engineering, NO. SKLGIE2018-M-2-1 and by National Natural Science Foundation of China (Grant Nos. 41674016, 41874041, 41904039).

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Correspondence to Laiping Feng .

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Zeng, T., Sui, L., Feng, L., Jia, X. (2020). Influence Analysis of Multi-LEO Augmentation MEO Satellite Orbit Determination Under Regional Station Layout. In: Sun, J., Yang, C., Xie, J. (eds) China Satellite Navigation Conference (CSNC) 2020 Proceedings: Volume II. CSNC 2020. Lecture Notes in Electrical Engineering, vol 651. Springer, Singapore. https://doi.org/10.1007/978-981-15-3711-0_12

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  • DOI: https://doi.org/10.1007/978-981-15-3711-0_12

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  • Online ISBN: 978-981-15-3711-0

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