北斗卫星导航系统双差动力法精密定轨及其精度分析

doi:10.11947/j.AGCS.2016.20150190

测绘学报 ›› 2016, Vol. 45 ›› Issue (2): 131-139.doi: 10.11947/j.AGCS.2016.20150190

北斗卫星导航系统双差动力法精密定轨及其精度分析

刘伟平, 郝金明, 田英国, 于合理, 张康

信息工程大学导航与空天目标工程学院, 河南郑州 450001

收稿日期:2015-04-10 修回日期:2015-08-04 出版日期:2016-02-20 发布日期:2016-02-29
作者简介:刘伟平(1986-),男,博士,讲师,研究方向为卫星精密定轨定位。
基金资助:
中国第二代卫星导航系统重大专项(GFZX0301040308);信息工程大学博士研究生学位论文创新基金(S201307)

Solution Method and Precision Analysis of Double-difference Dynamic Precise Orbit Determination of BeiDou Navigation Satellite System

LIU Weiping, HAO Jinming, TIAN Yingguo, YU Heli, ZHANG Kang

School of Navigation and Aerospace Engineering, Information Engineering University, Zhengzhou 450001, China

Received:2015-04-10 Revised:2015-08-04 Online:2016-02-20 Published:2016-02-29
Supported by:
Major Projects of the Second Generation Satellite Navigation System in China(No.GFZX0301040308);Doctoral Dissertation Innovation Fund of Information Engineering University(No.S201307)

摘要/Abstract

摘要： 针对GEO卫星切向轨道分量与双差模糊度强相关的问题,对经典双差动力法进行了改进,提出联合使用载波相位和相位平滑伪距实现北斗系统精密定轨,并从理论上分析了以上处理策略的可行性及对模糊度固定的影响,然后结合北斗系统精密定轨特点,推导给出了利用QIF方法实现北斗卫星双差模糊度固定的基本原理,实测数据分析表明:联合载波相位和相位平滑伪距,既可降低相关性,又可兼顾精度,定轨效果优于经典双差动力法;利用QIF方法能够取得一定的模糊度固定效果,但受观测条件限制,北斗卫星双差模糊度固定成功率整体不高,双差模糊度固定之后对轨道的改进作用有限。

关键词: 北斗卫星导航系统, 双差动力法, 精密定轨, 模糊度固定, 精度分析

Abstract: To resolve the high relativity between the transverse element of GEO orbit and double-difference ambiguity, the classical double-difference dynamic method is improved and the method, which is to determine precise BeiDou satellite orbit using carrier phase and pseudo-range smoothed by phase, is proposed. The feasibility of the method is discussed and the influence of the method about ambiguity fixing is analyzed. Considering the characteristic of BeiDou, the method, which is to fix double-difference ambiguity of BeiDou satellites by QIF, is derived. The real data analysis shows that the new method, which can reduce the relativity and assure the precision, is better than the classical double-difference dynamic method. The result of ambiguity fixing is well by QIF, but the ambiguity fixing success rate is not high on the whole. So the precision of BeiDou orbit can't be improved clearly after ambiguity fixing.

Key words: BeiDou Navigation Satellite System, double-difference dynamic method, precise orbit determination, ambiguity fixing, precision analysis

中图分类号:

P228

刘伟平, 郝金明, 田英国, 于合理, 张康. 北斗卫星导航系统双差动力法精密定轨及其精度分析[J]. 测绘学报, 2016, 45(2): 131-139.

LIU Weiping, HAO Jinming, TIAN Yingguo, YU Heli, ZHANG Kang. Solution Method and Precision Analysis of Double-difference Dynamic Precise Orbit Determination of BeiDou Navigation Satellite System[J]. Acta Geodaetica et Cartographica Sinica, 2016, 45(2): 131-139.

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北斗卫星导航系统双差动力法精密定轨及其精度分析

Solution Method and Precision Analysis of Double-difference Dynamic Precise Orbit Determination of BeiDou Navigation Satellite System

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