Acta Geodaetica et Cartographica Sinica ›› 2014, Vol. 43 ›› Issue (11): 1132-1138.doi: 10.13485/j.cnki.11-2089.2014.0186

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Multi-GNSS Joint Precise Orbit Determination of BeiDou Navigation Satellites System

LIU Weiping,HAO Jinming,LI Jianwen,CHEN Mingjian   

  1. Information Engineering University
  • Received:2014-02-25 Revised:2014-07-26 Online:2014-11-20 Published:2014-12-02
  • Contact: LIU Weiping E-mail:lwpchxy@sina.com

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Abstract:

Precise?orbit?productis?very?important?for?application?of?BeiDou?Navigation?Satellite?System.A?method?of?zero-differenced?multi-GNSS?joint?precise?orbit?determination?of?BeiDou?satellites?based?on?ambiguity?fixing?is?present.?The?realization?of?ambiguity?fixing?is?focused?on.?

The?real?data?is?analyzed,?and?the?results?show?that?the?three?dimensional?precision?of?GEO,?IGSO?and?MEO?can?respectively?reach?1.263m,?

0.241m?and?0.134m.?The?radial?precision?of?the?three?types?of?satellites?can?averagely?be?better?than?10cm,?and?that?of?IGSO?and?MEO?can?mostly?

be?better?than?5cm.?After?ambiguity?fixing,?the?three?dimensional?precision?of?BDS?is?improved?21.8%?averagely,?and?the?tangential?precision?is?

improved?most?obviously,?especially?for?GEO. 

Key words: BeiDou Navigation Satellite System, ambiguity fixing, zero-difference precise orbit determination, Multi-GNSS processing, SLR

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