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《Journal of Geodesy and Geodynamics》 2019-01
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Research on a Feature Extraction Method of GPS/PWV Time Series

HU Guangbao;YE Shirong;ZHANG Yanxiang;XIA Pengfei;XIA Fengyu;GNSS Research Center,Wuhan University;Dongguan Institute of Surveying and Mapping;  
To extract the features of 4-year GPS/PWV time series obtained by GAMIT/GLOBK software,we propose a GPS/PWV feature extraction method based on combination filter-assisted partly ensembled empirical mode decomposition(PEEMD)and Hilbert spectrum.First,filter-assisted PEEMD is combined with Hilbert spectrum to establish the feature extraction model of GPS/PWV.Then,the proposed method is applied to analyze the 4-year and 7-day GPS/PWV time series at TNML station,and the result of filter-assistedPEEMD is compared with the result of traditional wavelet decomposition.The results show that the proposed feature extraction method can accurately extract the feature components of annual and daily cycles,and that the results of the filter-assisted PEEMD are consistent with those of the wavelet decomposition,and that the extracted feature component are more coincident with the original signal.
【Fund】: 国家自然科学基金(41074008);; 国家重点研发计划(2016YFB0800405);; 福建省发展引导性基金(2016Y0002);; 福建省测绘地理信息局科技创新项目(2016J01);; 国家水利部公益性行业科研专项(201401072)~~
【CateGory Index】: P228.4
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