Endemic error correction model and quantitative analysis of precise point positioning
来源期刊：中国有色金属学报(英文版)2011年第z3期
论文作者：JI Chang-dong FENG Lei XU Ai-gong
文章页码：642 - 647
Key words：precise point positioning (PPP); zero-difference model; endemic error; GPS qualitative analysis
Abstract: To identify the endemic error of the precise point positioning which cannot be weakened or eliminated in precise point positioning (PPP) zero-difference model, the 24 h observation data acquired from CHAN station on Oct 31st, 2010, were adopted for analyses, different correction models of various errors were discussed and their influences on traditional zero-difference model were analyzed. The results show that the errors cannot be ignored. They must be corrected with suitable models and estimated with auxiliary parameters. The influence magnitudes of all errors are defined, and the results have guiding significance to improve the accuracy of precise point positioning zero-difference model.
JI Chang-dong, FENG Lei, XU Ai-gong
(School of Geomatics, Liaoning Technical University, Fuxin 123000, China)
Abstract:To identify the endemic error of the precise point positioning which cannot be weakened or eliminated in precise point positioning (PPP) zero-difference model, the 24 h observation data acquired from CHAN station on Oct 31st, 2010, were adopted for analyses, different correction models of various errors were discussed and their influences on traditional zero-difference model were analyzed. The results show that the errors cannot be ignored. They must be corrected with suitable models and estimated with auxiliary parameters. The influence magnitudes of all errors are defined, and the results have guiding significance to improve the accuracy of precise point positioning zero-difference model.
Key words:precise point positioning (PPP); zero-difference model; endemic error; GPS qualitative analysis
