测绘学报 ›› 2016, Vol. 45 ›› Issue (9): 1028-1034.doi: 10.11947/j.AGCS.2016.20150296

• 大地测量学与导航 • 上一篇    下一篇

北斗/GPS实时精密卫星钟差融合解算模型及精度分析

陈良1,2,3, 耿长江1,2, 周泉1,2   

  1. 1. 中国航天电子技术研究院卫星导航系统工程中心, 北京 100094;
    2. 中国卫星导航系统管理办公室测试评估研究中心, 北京 100094;
    3. 德国地学研究中心, 波茨坥 14473
  • 收稿日期:2015-06-16 修回日期:2016-01-11 出版日期:2016-09-20 发布日期:2016-09-29
  • 作者简介:陈良(1988-),男,硕士,工程师,研究方向为GNSS广域增强、精密数据处理与导航卫星测试评估.E-mail:sdkdchenliang@163.com
  • 基金资助:
    国家留学基金、航天国际化创新型人才培养项目([2015]5138)

Estimation Model and Accuracy Analysis of BeiDou/GPS Real-time Precise Satellite Clock Error Integrated Resolving

CHEN Liang1,2,3, GENG Changjiang1,2, ZHOU Quan1,2   

  1. 1. GNSS System Engineering Center, China Academy of Aerospace Electronics Technology, Beijing 100094, China;
    2. Test and Assessment Research Center, China Satellite Navigation Office, Beijing 100094, China;
    3. Helmholtz Centre Potsdam, German Research Centre for Geosciences(GFZ), Telegrafenberg, Potsdam 14473, Germany
  • Received:2015-06-16 Revised:2016-01-11 Online:2016-09-20 Published:2016-09-29
  • Supported by:
    State Scholarship Fund for International Innovative Aerospace Talent Project(No.[2015]5138)

摘要: 实时GNSS精密单点定位(PPP)技术必须使用实时的高精度卫星精密轨道和钟差。本文研究了精密卫星钟差融合解算模型及策略,并利用滤波算法实现了北斗/GPS实时精密卫星钟差融合估计算法。仿真实时试验结果显示:获得的北斗/GPS实时钟差与GFZ事后多GNSS精密钟差(GBM)的标准差在0.15ns左右;使用该钟差进行GPS动态PPP试验,收敛后水平精度优于5cm,高程精度优于10cm;使用仿真实时钟差进行的北斗动态PPP与使用GFZ事后多GNSS精密钟差开展的试验相比精度相当,可实现分米级定位。

关键词: 北斗卫星导航系统, GPS, 精密钟差融合解算, 实时PPP, 精度分析

Abstract: Real-time high-precise satellite orbit and clock products are needed in real-time GNSS precise point positioning (PPP). In this paper, Estimation model and strategy of multi-GNSS precise satellite clock integrated resolving are researched and BeiDou/GPS real-time precise clock integrated estimation algorithm is realized by filter. Real-time simulation test results show: the STD accuracy of BeiDou/GPS real-time clock estimated in this paper compared to GFZ multi-GNSS precise clock(GBM) is about 0.15ns; horizontal accuracy after convergence of GPS kinematic PPP using simulation real-time clock products estimated in this paper is better than 5cm and vertical accuracy is better than 10cm, respectively; in BeiDou kinematic PPP test, horizontal and vertical accuracy results are same as the results using GFZ multi-GNSS precise clock(GBM) products, and the decimeter positioning can be realized.

Key words: BeiDou navigation satellite system (BDS), GPS, precise clock integrated estimation, real-time PPP, accuracy analysis

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