Abstract
Based on un-differenced model of clock estimation, the mathematic model of real-time clock estimation influenced by orbit error is derived, and then the estimation accuracy of BDS real-time clock and real-time positioning accuracy are analyzed. The results show that real-time BDS clock accuracy achieves 0.30 ns using the rapid orbit product and the corresponding 2-D and 3-D real-time positioning accuracy are 0.36 and 0.48 m, respectively. With 0.1 and 0.2 m orbit error influenced, the decreased accuracy of real-time clock estimation is 0.05 and 0.14 ns, and the decreased positioning accuracy is 0.057 and 0.154 m, respectively.
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Acknowledgements
Thanks for MGEX provided BDS observation data and GFZ provided rapid orbit and clock product, this work was supported partly by the Program of the National Natural Science Foundation of China (41104019, 41104022, 41304033 and 41504006), and the Grand Projects of the Beidou-2 System (GFZX0301040308), the Special Fund for Basic Scientific Research of Central Colleges (Grant No. 2014G1261051 and 310826165014, Chang’an University), Chinese Academy of Sciences (CAS) programs of “Pioneer Hundred Talents”, “Light of West China” and “Youth Innovation Promotion Association”.
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Fu, W., Zhang, Q., Huang, G., Li, P., Cui, B., Tu, R. (2016). Performance Analysis of Real-Time BDS Clock Estimation with Different Orbit Accuracy. In: Sun, J., Liu, J., Fan, S., Wang, F. (eds) China Satellite Navigation Conference (CSNC) 2016 Proceedings: Volume I. Lecture Notes in Electrical Engineering, vol 388. Springer, Singapore. https://doi.org/10.1007/978-981-10-0934-1_9
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DOI: https://doi.org/10.1007/978-981-10-0934-1_9
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