基于DInSAR技术获取形变位移三分量的新方法  

A New Method of Acquiring Three Components of Deformation Displacement Based on DInSAR Technique

作　　者：查显杰[1] 傅容珊[1] 刘斌[1] 戴志阳[1] 邵志刚[1] 韩立波[1] 

机构地区：[1]中国科学技术大学地球和空间科学学院,合肥230026

出　　处：《遥感信息》2008年第1期4-8,15,共6页Remote Sensing Information

基　　金：国家自然科学基金(40574043);中国科学技术大学研究生创新基金(KD2005028);青年基金的联合资助

摘　　要：提出从三个不同视线向的SAR差分干涉图中提取地表形变位移三分量的新方法。为了检验该方法的可行性,选取三组不同卫星轨道数据模拟了两种理想地表形变模型的差分干涉图,并采用最小二乘法解缠差分相位场,从解缠干涉图中获得视线向形变位移量,然后利用矢量分解方法将视线向形变位移量解算成形变位移三分量,最后对形变位移三分量的反演结果进行了误差分析。误差均不超过15%,证实了该方法的可行性。A new method of acquiring three components of surface deformation using three SAR interferograms with different satellite＇s line of sight is presented. To verify this method, interferograms of two type ideal surface deformations are modeled with three group of satellite orbits data. Then the difference phase field is unwrapped using the least-squares method, thus acquiring the deformation displacement in the line of sight from the unwrapped interferograms. Next through vector composition, three components of surface deformation displacement from the displacement in the line of sight are obtained. Finally the errors of inversion results are analyzed. The errors are less than 15%, which demonstrates the feasibility of our method.

关 键 词：差分干涉SAR 地表形变场 干涉图 相位解缠 

分 类 号：TP751[自动化与计算机技术—检测技术与自动化装置]