| 非组合精密单点定位算法精密授时的可行性研究 |
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| 引用本文： | 闫伟,袁运斌,欧吉坤,李得海.非组合精密单点定位算法精密授时的可行性研究[J].武汉大学学报(信息科学版),2011(6). |
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| 作者姓名： | 闫伟 袁运斌 欧吉坤 李得海 |
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| 作者单位： | 中国科学院测量与地球物理研究所动力大地测量学重点实验室;中国科学院研究生院; |
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| 基金项目： | 国家杰出青年基金资助项目(40625013); 国家自然科学基金资助项目(40890160); 中国科学院知识创新工程领域前沿资助项目(0909141014);中国科学院研究生科技创新与社会实践专项基金资助项目 |
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| 摘 要： | 利用基于GPS双频原始观测数据的非组合精密单点定位(PPP)算法进行精密授时,给出了其数学模型与数据预处理策略。实验结果表明,非组合PPP算法可以有效避免传统PPP算法由于观测值组合过程中观测噪声及多路径效应误差被放大而造成的对接收机钟差解算的不利影响,实现亚纳秒级(0.3 ns)的钟差解算精度;同等条件下,非组合PPP算法授时精度优于传统PPP算法,可以用于精密授时解算。
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| 关 键 词： | 精密单点定位 GPS授时 非组合 |
Feasibility of Precise Timing with Uncombined PPP |
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| YAN Wei, YUAN Yunbin OU Jikun LI Dehai.Feasibility of Precise Timing with Uncombined PPP[J].Geomatics and Information Science of Wuhan University,2011(6). |
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| Authors: | YAN Wei YUAN Yunbin OU Jikun LI Dehai |
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| Institution: | YAN Wei1,2 YUAN Yunbin1 OU Jikun1 LI Dehai1,2(1 Key Laboratory of Dynamic Geodesy,Institute of Geodesy and Geophysics,CAS,340 Xudong Street,Wuhan 430077,China)(2 Graduate University of CAS,A19 Yuquan Road,Beijing 100039,China) |
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| Abstract: | The theory and mathematical model of uncombined precise point positioning were proposed.And several effective data processing strategies were proposed to improve PPP receiver clock solution by avoid absorbing some un-modeled system errors.Full-featured PPP software was developed base on the GPSTk core library.Experiments with data from IGS stations distributed all over the world were carried out to evaluate the performance of GPS timing with uncombined PPP algorithm.The results support that PPP algorithm ca... |
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| Keywords: | precise point positioning GPS timing uncombined |
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