InSAR形变等值线图绘制方法研究

英文篇名：RESEARCH ON DEFORMATION CONTOUR MAPPING FROM SAR INTERFEROMETRY
中文刊名：大地测量与地球动力学
英文刊名：Journal of Geodesy and Geodynamics
作者：张静 ; 赵超英 ; 张勤 ; 瞿伟
英文作者：Zhang Jing1) ; Zhao Chaoying1 ; 2) ; Zhang Qin1 ; 2) and Qu Wei1)1)College of Geology Engineering and Geomatics ; Chang'an University ; Xi'an 7100542)Key Laboratory of Western China's Mineral Resources and Geological Engineering ; Ministry of Education ; Xi'an 710054)
中文关键词：InSAR ; 四叉树分解 ; 克里金插值 ; 等值线 ; 滤波
英文关键词：SAR interferometry ; quadtree decomposition ; Kriging interpolation ; contour ; filtering
出版日期：2009-10-15
机构：长安大学地质工程与测绘学院;西部矿产资源与地质工程教育部重点实验室;
年：2009
期：05
出版单位：大地测量与地球动力学

摘要

研究InSAR形变数据的四叉数压缩、Kriging插值和低通滤波处理方法。以西安地区1996年两期SAR监测获取的地面沉降为例进行的实例分析结果证实:该方法能有效抑制形变粗差,并有利于特征点的提取和等值线的绘制。
The deformation data from the InSAR processing are always massive and always include some errors due to decorrelation,which cannot be detected from image expressing.However,compared with the conventional surveying data or inversion analysis,it should be better eliminated and greatly compressed when discrete feature points are extracted or with a contour line from InSAR.On the basis of the quadtree compressing,Kriging interpolation and Low-pass filter,a flowchart of the contour mapping is proposed for the InSAR deformation data.Finally the method is evaluated through a case study of the two-period ground subsidence around Xi'an City in 1996.

引文

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