BeiDou Regional Navigation System Network Solution and Precision Analysis
In this paper, BeiDou post-mission high precision orbit determination and positioning in network solution mode are researched and implemented under current BeiDou regional navigation system conditions. We made an in-depth analysis of the influence factors
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BeiDou Regional Navigation System Network Solution and Precision Analysis Yang Liu, Yidong Lou, Chuang Shi, Fu Zheng and Qianqian Yin
Abstract In this paper, BeiDou post-mission high precision orbit determination and positioning in network solution mode are researched and implemented under current BeiDou regional navigation system conditions. We made an in-depth analysis of the influence factors, such as ambiguity resolution, orbit precision, reference station selection, inter-station distance, on precision of BeiDou network solution. We analysed the different ambiguity resolution strategy among GEO, IGSO and MEO, and its impact on precision orbit determination and network solution positioning. We conducted an experimental comparison of BeiDou network solution with BeiDou precise point positioning (PPP). With long-term continuous measurement data from Wuhan University BeiDou Experimental Tracking Stations processed, the results show that ambiguity resolution improves all the GEO, IGSO and MEO orbit precision, especially for the along direction and 3D RMS of GEO, IGSO and MEO is 155, 33 and 28 cm respectively, the radial precision is basically better than 10 cm. BeiDou one-day network solution positioning precision is better than 1 cm in horizontal and better than 2 cm in vertical, which is slightly better than BeiDou PPP precision. Keywords BeiDou analysis
Network solution PPP Ambiguity resolution Precision
16.1 Introduction BeiDou Navigation Satellite System began test service at the end of 2011, and has now completed a constellation comprising four Geostationary Earth Orbit (GEO) satellites, five Inclined Geosynchronous Satellite Orbit (IGSO) satellites and four Y. Liu Y. Lou (&) C. Shi F. Zheng Q. Yin GNSS Research Center, Wuhan University, Wuhan, China e-mail: [email protected]
J. Sun et al. (eds.), China Satellite Navigation Conference (CSNC) 2013 Proceedings, Lecture Notes in Electrical Engineering 245, DOI: 10.1007/978-3-642-37407-4_16, Ó Springer-Verlag Berlin Heidelberg 2013
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Medium Earth Orbit (MEO) satellites in operation, and will provide official service for most parts of the Asia–Pacific in early 2013. In order to explore the application of BeiDou regional navigation system in high precision positioning, we need to analyse the precision of orbit determination and positioning it can reach. Some scholars have conducted a series of studies on this issue. In BeiDou precise orbit determination, Mao et al. [1] conducted GEO and IGSO joint orbit determination, the overlap orbit accuracy reaches a few meters with additional custom acceleration, and radial accuracy is better than 10 cm assessed using satellite laser ranging; Zhou et al. [2] achieved the GEO/IGSO orbit determination under a regional monitoring network and used independent time synchronization system of BeiDou and SLR to assess the accuracy of orbit and clock; Montenbruck et al. [3] analysed the signal characteristics of the BeiDou regional navigation system, the 3D orbit overlapping accuracy of BeiDo
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