Accuracy Assessment of BDS Precision Orbit Determination and the Influence Analysis of Site Distribution

doi:10.11947/j.AGCS.2018.20180278

Abstract

Abstract: BDS precision orbit determination is a key content of the BDS application, and the number and distribution of reference stations are important factors affecting the accuracy of the orbit determination. In this paper, the BDS precise orbit determination results are obtained by using the IGS MGEX stations and the national reference stations in China. The accuracy of orbit determination of GEO, IGSO and MEO is 10.3 cm, 2.8 cm and 3.2 cm, and the radial accuracy is better than 2 cm.The results show that the accuracy of the overlapping arcs is increased by 17.6% after adding the national reference stations in China, and the accuracy of IGSO satellite is improved by 36.3%. The results of ODOP and SLR were further analyzed. It was found that the improvement of ODOP improved area and SLR was consistent with the accuracy of overlapping arc.

Key words: BDS precise orbit determination, accuracy assessment, Chinese national reference stations, reference stations distribution, ODOP

CLC Number:

P228

CHEN Ming, GUO Jiming, WU Junli, SONG Weiwei, ZHANG Longping. Accuracy Assessment of BDS Precision Orbit Determination and the Influence Analysis of Site Distribution[J]. Acta Geodaetica et Cartographica Sinica, 2018, 47(S0): 93-100.

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