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《Editorial Board of Geomatics and Information Science of Wuhan University》 2005-10
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Study on the Characteristics of Multipath Effects in GPS Dynamic Deformation Monitoring

HUANG Shengxiang~1 LI Peihong~2 YANG Baocen~1 XIANG Dong~1(1 School of Geodesy and Geomatics, Wuhan University, 129 Luoyu Road, Wuhan 430079, China)(2 Faculty of Environmental and Architectural Engineering, Jiangxi University of Science and Technology,122 Hongqi Street, Ganzhou 341000, China)  
The multipath has long been considered a major error source in GPS applications. This paper analyzes the characteristics of the GPS signal multipath effects, bases on which do an experiment that considers the characteristics of dynamic deformation monitoring. The solution results of observation data to successive two days are processed by a method, which combines the wavelet filtering and the differential correction between successive two days. The research demonstrates that the multipath errors have stronger repeatability on successive days; after significantly mitigating the influence of multipath effects, the accuracy of three-dimensional positioning for GPS dynamic deformation monitoring can attain the mm level, an obvious accuracy improving particularly in vertical component. The characteristics of GPS signal multipath, the experimental scheme and the qualitative and quantitative analysis of results are detailed.
【Fund】: 武汉大学地球空间环境与大地测量教育部重点实验室开放研究基金资助项目(020907)
【CateGory Index】: P228.4
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