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 。
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).
出处
《武汉大学学报（信息科学版）》
EI
CSCD
北大核心
2003年第4期409-412,共4页
Geomatics and Information Science of Wuhan University
基金
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)
