title: Precise orbit determination of BeiDou constellation based on BETS and MGEX network.
abstract: Chinese BeiDou Navigation Satellite System is officially operational as a regional constellation with five Geostationary Earth Orbit (GEO) satellites, five Inclined Geosynchronous Satellite Orbit (IGSO) satellites and four Medium Earth Orbit (MEO) satellites. Observations from the BeiDou Experimental Tracking Stations (BETS) and the IGS Multi-GNSS Experiment (MGEX) network from 1 January to 31 March 2013 are processed for orbit determination of the BeiDou constellation. Various arc lengths and solar radiation pressure parameters are investigated. The reduced set of ECOM five-parameter model produces better performance than the full set of ECOM nine-parameter model for BeiDou IGSO and MEO. The orbit overlap for the middle days of 3-day arc solutions is better than 20 cm and 14 cm for IGSO and MEO in RMS, respectively. Satellite laser ranging residuals are better than 10 cm for both IGSO and MEO. For BeiDou GEO, the orbit overlap of several meters and satellite laser ranging residuals of several decimetres can be achieved.
authors.affiliation: GNSS Research Centre, Wuhan University, Wuhan 430079, China.
authors.forename: Yidong
authors.initials: Y
authors.lastname: Lou
authors.affiliation: GNSS Research Centre, Wuhan University, Wuhan 430079, China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Liu
authors.affiliation: 1] GNSS Research Centre, Wuhan University, Wuhan 430079, China [2] State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430079, China.
authors.forename: Chuang
authors.initials: C
authors.lastname: Shi
authors.affiliation: GNSS Research Centre, Wuhan University, Wuhan 430079, China.
authors.forename: Xiuguang
authors.initials: X
authors.lastname: Yao
authors.affiliation: GNSS Research Centre, Wuhan University, Wuhan 430079, China.
authors.forename: Fu
authors.initials: F
authors.lastname: Zheng
references.citation: Sensors (Basel). 2013 Mar 01;13(3):2911-28
references.pmid: 23529116