REDUCING GPS CARRIER PHASE ERRORS WITH EMD-WAVELET FOR PRECISE STATIC POSITIONING

被引：36

作者：

Wang, Jian ^{[1
]}

Wang, Jinling ^{[1
]}

Roberts, Craig ^{[1
]}

机构：

[1] Univ New S Wales, Sch Surveying & Spatial Informat Syst, Sydney, NSW 2052, Australia

来源：

SURVEY REVIEW | 2009年 / 41卷 / 312期

关键词：

Carrier phase; Errors; EMD-wavelet; Static positioning; Signal processing; EMPIRICAL MODE DECOMPOSITION; AMBIGUITY RESOLUTION; MULTIPATH MITIGATION; CYCLE;

D O I：

10.1179/003962609X390067

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

In this paper, a new EMD-Wavelet based model is used to reduce carrier phase errors for precise static GPS positioning. The EMD is a new signal processing method for analysing non-linear time series. which decomposes a time series into a finite and often small number of Intrinsic Mode Functions (IMFs). The decomposition procedure is adaptive and data-driven. The IMFs are stationary which are more suitable for wavelet analysis. The merits of both the EMD and Wavelets are combined to produce an improved EMD-Wavelet systematic error extraction model. Thereafter, a method of the GPS baseline calculation based on the EMD-Wavelet systematic error mitigation model is suggested The experimental results show that the proposed scheme dramatically improves the reliability of ambiguity resolution with a larger F-ratio and W-ratio index after systematic error elimination.

引用

页码：152 / 161

页数：10

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