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中文摘要：
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。
英文摘要：
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.
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