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《Science of Surveying and Mapping》 2014-11
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Analysis on solution and accuracy of atmospheric delay variation based on GPS and PS-DInSAR

LONG Si-chun;ZHANG Zhao-long;Hu Yan-dong;LI Li;ZHANG Li-ya;Hunan Key Laboratory of Coal Resources Clean-utilization and Mine Environment Protection,Hunan University of Science and Technology;Institute of Geomatics and Deformation Monitoring,Hunan University of Science and Technology;College of Energy Resources,Hunan University of Science and Technology;  
In the paper,Kriging interpolation was adopted to interpolate the discretely-distributed atmospheric delay data of the 11 continuous GPS points in Tianjin area,and the general continuous distribution of atmospheric zenith delay variation was obtained.It held a character analysis on the irreducible phase obtained by means of PS-DInSAR,which mainly consists of non-linear deformation phase,atmospheric phase and noise phase.The obtained data were processed in high pass filtering in time domain and low pass filtering in space domain,and then the atmospheric delay variation of the same area in the same time period by GPS was obtained.The two atmospheric delay variations were compared,and their Root Mean Square errors and the absolute value of the differences between the two atmospheric delay variations were analyzed.The result showed that the tendency of atmospheric delay variations obtained by GPS and PSDInSAR would basically agree with each other,their characteristics could be mutually complementary.Thus further integration of the two may help get more reliable result.
【Fund】: 国家自然科学基金(41474014 41004002);; 大地测量与地球动力学国家重点实验室基金(SKLGED2014-5-3-E);; 桂科能基金(1207115-21);; 煤炭资源与环保湖南省重点实验室基金(E21221)
【CateGory Index】: P228.4
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