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Sensors 2013, 13(3), 2911-2928; doi:10.3390/s130302911
Article

Experimental Study on the Precise Orbit Determination of the BeiDou Navigation Satellite System

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Received: 22 January 2013; in revised form: 25 February 2013 / Accepted: 27 February 2013 / Published: 1 March 2013
(This article belongs to the Section Physical Sensors)
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Abstract: The regional service of the Chinese BeiDou satellite navigation system is now in operation with a constellation including five Geostationary Earth Orbit satellites (GEO), five Inclined Geosynchronous Orbit (IGSO) satellites and four Medium Earth Orbit (MEO) satellites. Besides the standard positioning service with positioning accuracy of about 10 m, both precise relative positioning and precise point positioning are already demonstrated. As is well known, precise orbit and clock determination is essential in enhancing precise positioning services. To improve the satellite orbits of the BeiDou regional system, we concentrate on the impact of the tracking geometry and the involvement of MEOs, and on the effect of integer ambiguity resolution as well. About seven weeks of data collected at the BeiDou Experimental Test Service (BETS) network is employed in this experimental study. Several tracking scenarios are defined, various processing schemata are designed and carried out; and then, the estimates are compared and analyzed in detail. The results show that GEO orbits, especially the along-track component, can be significantly improved by extending the tracking network in China along longitude direction, whereas IGSOs gain more improvement if the tracking network extends in latitude. The involvement of MEOs and ambiguity-fixing also make the orbits better.
Keywords: BeiDou; tracking network; precise orbit determination; ambiguity-fixing BeiDou; tracking network; precise orbit determination; ambiguity-fixing
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

He, L.; Ge, M.; Wang, J.; Wickert, J.; Schuh, H. Experimental Study on the Precise Orbit Determination of the BeiDou Navigation Satellite System. Sensors 2013, 13, 2911-2928.

AMA Style

He L, Ge M, Wang J, Wickert J, Schuh H. Experimental Study on the Precise Orbit Determination of the BeiDou Navigation Satellite System. Sensors. 2013; 13(3):2911-2928.

Chicago/Turabian Style

He, Lina; Ge, Maorong; Wang, Jiexian; Wickert, Jens; Schuh, Harald. 2013. "Experimental Study on the Precise Orbit Determination of the BeiDou Navigation Satellite System." Sensors 13, no. 3: 2911-2928.



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