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合成孔径雷达差分技术(D-InSAR)是获取大范围地表形变的一种新方法。首先介绍了D-InSAR二轨法提取地表形变的基本原理,然后以徐州大屯中心区为实验区域,获取了徐州大屯中心区2007年到2009年地面沉降结果,并与水准测量获取的沉降结果进行了比较。结果表明,2007年到2009年大屯中心区平均沉降量为3mm,年平均最大沉降累积量达到33.5mm,监测结果与水准测量结果相一致,说明用D-InSAR二轨法获得的形变结果能很好地反应监测区域的沉降情况。 更多还原

【Abstract】 Differential Synthetic Aperture Radar Interferometry is a newly developed technique for monitoring large-scale ground deformation.This paper firstly introduced the principle of two-pass D-InSAR and then the subsidence of the Datun central district,Xuzhou from 2007.3 to 2009.1 was detected.The result showed 3 mm of mean subsidence and 33.5 mm/year of maximum subsidence during the period,which was correspond with the leveling measurement.It illustrated the deformation extracted from two-pass D-InS... 更多还原