Accuracy evaluation of GPS, BDS and GPS+BDS precise point positioning

doi:10.13474/j.cnki.11-2246.2021.0288

Abstract

Abstract: In view of the completion of BeiDou satellite network, it is necessary to evaluate and analyze the system performance of BDS. The 31 day observation data collected by multi GNSS experience network is selected to compare and analyze the precision of static and dynamic precise point positioning under different conditions of GPS, BDS and GPS+BDS. The experimental results show that the accuracy of GPS and BDS single system static PPP in N, E, U direction is better than 4, 4, 7 cm, respectively; GPS+BDS combined system static PPP accuracy in N, E, U direction is better than 3, 3, 6 cm; GPS single system dynamic PPP accuracy in N, E, U direction is better than 5, 5, 10 cm; BDS single system dynamic PPP accuracy in N, E, U direction is better than 5, 6, 12 cm; GPS+BDS integrated system dynamic PPP accuracy is better than 4, 4, 8 cm in N, E, U direction. So the integrated system can improve the stability and accuracy of positioning compared with single system, and the advantages of the combined system are more obvious in the case of dynamic PPP.

Key words: GPS, BDS, precise point positioning, single system, composite system

CLC Number:

P228

LI Jiangang, LI Honghui, CHAI Xiangjun, WANG Tianyu. Accuracy evaluation of GPS, BDS and GPS+BDS precise point positioning[J]. Bulletin of Surveying and Mapping, 2021, 0(9): 124-129.

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