| 基于GPS非差观测值进行精密单点定位研究 |
| |
| 引用本文： | 韩保民,欧吉坤.基于GPS非差观测值进行精密单点定位研究[J].武汉大学学报(信息科学版),2003,28(4):409-412. |
| |
| 作者姓名： | 韩保民 欧吉坤 |
| |
| 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开放研究实验室,武汉市徐东路174号,430077 |
| |
| 基金项目： | 国家自然科学基金资助项目 (4 0 0 740 0 3 )，中国科学院知识创新工程资助项目 (KZCX2 10 6) |
| |
| 摘 要： | 介绍了精密单点定位所用的数学模型及解算方案，着重分析了基于GPS非差双频观测值进行精密单点定位的误差模型、数据质量控制方法、卫星钟差的估算和内插、数据和解的一致性及精密单点定位能达到的精度等问题，并和双差结果作了比较。结果表明，利用精密星历及卫星钟改正参数的精密单点定位可达到cm级精度。
|
| 关 键 词： | GPS 非差观测值 精密单点定位 数学模型 解算方案 误差模型 数据质量控制方法 卫星钟差 估算 内插 精度 |
| 文章编号： | 1671-8860(2003)04-0409-04 |
| 修稿时间： | 2003年3月18日 |
Precise Point Positioning Based on Undifferenced GPS Data |
| |
| HAN Baomin,OU Jikun.Precise Point Positioning Based on Undifferenced GPS Data[J].Geomatics and Information Science of Wuhan University,2003,28(4):409-412. |
| |
| Authors: | HAN Baomin OU Jikun |
| |
| Institution: | HAN Baomin 1 OU Jikun 1 |
| |
| Abstract: | This paper first introduces the code and phase models used in precise point positioning (PPP) method, then the principle and simple procedure of PPP processing algorithm are introduced, and the main error sources of PPP method are presented. A lot of attentions are paid to the methods of quality control for PPP method. What's more, the estimation and interpolation of satellite clock errors, the consistence of data and solution and the accuracy that PPP method can attain are discussed. Last, an example of PPP is processed and the corresponding results are compared with the results obtained by using GPS double difference observations. The results show that the accuracy of PPP can attain cm-precision and is approximately equal to that of double difference with long baselines (>1 000km). |
| |
| Keywords: | GPS undifferenced observations precise point positioning precise satellite ephemeris precise satellite clock corrections data processing |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
