Analysis and Optimization of BDS GEO/IGSO/MEO Ground Monitoring Stations Configuration for Determining GNSS Orbit

doi:10.11947/j.AGCS.2016.F029

Acta Geodaetica et Cartographica Sinica ›› 2016, Vol. 45 ›› Issue (S2): 82-92.doi: 10.11947/j.AGCS.2016.F029

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Analysis and Optimization of BDS GEO/IGSO/MEO Ground Monitoring Stations Configuration for Determining GNSS Orbit

ZHANG Longping^1,2, DANG Yamin^2,1, CHENG Yingyan², XUE Shuqiang^2,4, GU Shouzhou^3,2, HAN Deqiang²

1. College of Geomatics, Shandong University of Science and Technology, Qingdao 266590, China;
2. Chinese Academy of Surveying and Mapping, Beijing 100830, China;
3. GNSS Research Center, Wuhan University, Wuhan 430079, China;
4. College of Geology Engineering and Geomantics, Chang'an University, Xi'an 710054, China

Received:2016-11-25 Revised:2016-12-20 Online:2017-05-20 Published:2017-05-20
Supported by:
Key Project of China National Programs for Research and Development (Nos.2016YFB0501405;2016YFB0502105);The National Natural Science Foundation of China (Nos.41474011;41104018;41404034);Special Research Grant for Surveying and Mapping Non-profit Public Service(No.B1503);iGMAS(No.GFZX0301040308-06)

Abstract

Abstract:

Orbit determination accuracy of GNSS satellites depends on the satellites dynamics models and GNSS orbit determination geometry. Because of the weak geometry, higher orbit height of GEO and IGSO and relatively low accuracy of the dynamics models, the geometry information may play an important role in improving the GNSS orbit. The method for analysis the configuration and the influence of BDS GEO/IGSO/MEO ground monitoring stations distribution are discussed. Firstly, based on the reduced-dynamic orbit determination theory, the precision improvement of GNSS orbit from multi-epoch geometry observations is revealed. Secondly, the geometric condition of an ideal configuration for BDS satellites orbit determination is studied and the influence factors (quantity, range, density) are obtained. Thirdly, the method based on the discrete probability distribution is proposed to analyse the configuration of the ground monitoring stations. Finally, the indicators of discrete probability density and configuration of BDS orbit determination are optimized by adding five Chinese regional stations. It is showed that the improvement of GEO and IGSO satellites is more significant relative to MEO satellites. The accuracy of GEO/IGSO/MEO satellites is improved by 10%, 16%, 4% respectively.

Key words: virtual monitoring stations, configuration optimization, discrete approximate density, configuration superposition

CLC Number:

P228

ZHANG Longping, DANG Yamin, CHENG Yingyan, XUE Shuqiang, GU Shouzhou, HAN Deqiang. Analysis and Optimization of BDS GEO/IGSO/MEO Ground Monitoring Stations Configuration for Determining GNSS Orbit[J]. Acta Geodaetica et Cartographica Sinica, 2016, 45(S2): 82-92.

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Analysis and Optimization of BDS GEO/IGSO/MEO Ground Monitoring Stations Configuration for Determining GNSS Orbit

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