测绘学报 ›› 2014, Vol. 43 ›› Issue (11): 1132-1138.doi: 10.13485/j.cnki.11-2089.2014.0186

• 学术论文 • 上一篇    下一篇

多GNSS融合的北斗卫星精密定轨

刘伟平1,郝金明1,李建文2,陈明剑1   

  1. 1. 信息工程大学导航与空天目标工程学院
    2. 解放军信息工程大学导航与空天目标工程学院导航工程教研室
  • 收稿日期:2014-02-25 修回日期:2014-07-26 出版日期:2014-11-20 发布日期:2014-12-02
  • 通讯作者: 刘伟平 E-mail:lwpchxy@sina.com
  • 基金资助:

    中国第二代卫星导航系统重大专项;信息工程大学博士研究生学位论文创新基金

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

摘要:

提供高精度的精密轨道产品对北斗系统的推广应用具有重要意义。给出了一种基于模糊度固定的北斗卫星多系统融合非差精密定轨方法,重点推导论述了模糊度固定的实现方法,并结合实测数据,对其精密定轨效果进行了分析,初步分析结果表明:利用本文方法,北斗GEO、IGSO、MEO卫星三维定轨精度分别达到1.263m、0.214m、0.134m,三类卫星径向定轨精度平均优于10cm,IGSO和MEO已经基本优于5cm;模糊度固定以后,北斗卫星三维定轨精度平均提高了21.8%,轨道切向精度改善最为明显,其中又以GEO卫星改进最大。 

关键词: 北斗卫星导航系统, 模糊度固定, 非差精密定轨, 多系统融合, SLR

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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