永久散射体雷达差分干涉应用于区域地表沉降探测-polyuira.pdf

永久散射体雷达差分干涉应用于区域地表沉降探测-polyuira.pdf

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永久散射体雷达差分干涉应用于区域地表沉降探测-polyuira

50 3 Vol. 50, No.3 2007 5 CHINESE JOURNAL OF GEOPHYSICS May, 2007 , , . . , 2007,50(3) :737~ 743 Chen Q, Liu G X, Ding X L, et al. Radar differential interfero etry based on per anent scatterers and its application to detecting regional ground subsidence. ChineseJ . Geophys.( in Chinese) ,2007,50(3): 737~ 743 1 1 2 1 陈 强, 刘国祥 , 丁晓利 , 李永树 1 , 610031 2 , . , : , PS , . 10 ERS- 12C SAR , , , PS . ,,, , 0001- 5733(2007)03- 0737- 07 P227 2006- 05- 10, 2006- 12- 18 Radar differential interferometry based on permanent scatterers and its application to detecting regional ground subsidence 1 1 2 1 CHEN Qiang , LIU Guo-Xiang , DING Xiao-Li , LIYong-Shu 1 Department of Surveying Engineering, Southwest Jiaotong University , Chengdu 610031, China 2 Department of Land Surveying and Geo-Inf ormatics, TheHong Kong olytechnic University , Hong Kong, China Abstract Synthetic aperture radar differential interfero etry (DInSAR) based on per anent scatterers (PS) ay overco e or itigate two ain disadvantages, i. e., radar signal decorrelation and at ospheric delay influence, which often take place in the conventional DInSAR. This paper analyzes all the processing procedures involved in PS-based DInSAR. Considering that defor ation is of te poral correlation and topographicphase is proportional to nor al baseline, the ethod of generating PS network is

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