| 北斗/GPS实时精密卫星钟差融合解算模型及精度分析 |
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| 引用本文： | 陈良,耿长江,周泉.北斗/GPS实时精密卫星钟差融合解算模型及精度分析[J].测绘学报,2016,45(9):1028-1034. |
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| 作者姓名： | 陈良 耿长江 周泉 |
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| 作者单位： | 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 |
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| 基金项目： | State Scholarship Fund for International Innovative Aerospace Talent Project(No.[2015]5138)国家留学基金、航天国际化创新型人才培养项目([2015]5138) |
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| 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0.15 ns左右;使用该钟差进行GPS动态PPP试验,收敛后水平精度优于5 cm,高程精度优于10 cm;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。
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| 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 |
| 收稿时间： | 2015-06-16 |
| 修稿时间： | 2016-01-11 |
Estimation Model and Accuracy Analysis of BeiDou/GPS Real-time Precise Satellite Clock Error Integrated Resolving |
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| CHEN Liang,GENG Changjiang,ZHOU Quan.Estimation Model and Accuracy Analysis of BeiDou/GPS Real-time Precise Satellite Clock Error Integrated Resolving[J].Acta Geodaetica et Cartographica Sinica,2016,45(9):1028-1034. |
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| Authors: | CHEN Liang GENG Changjiang ZHOU Quan |
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| Institution: | 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 |
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| 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. |
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| Keywords: | BeiDou navigation satellite system (BDS) GPS precise clock integrated estimation real-time PPP accuracy analysis |
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