PS-InSAR公共主影像选择方法的研究  

A Method for Selecting Common Master Images in PS-InSAR

作　　者：王哲[1] 张菊清[1,2] 

机构地区：[1]长安大学地质工程与测绘学院,西安710054 [2]西部矿产资源与地质工程教育部重点实验室,西安710054

出　　处：《遥感信息》2013年第1期49-53,共5页Remote Sensing Information

基　　金：中央高校基本科研业务费专项资金(项目编号:CHD2010JC048);长安大学基础研究支持计划专项基金;西部矿产资源与地质工程教育部重点实验室开放基金资助

摘　　要：PS-InSAR干涉中公共主影像的选择关系到干涉的质量。本文在综合考虑时空基线距和多普勒质心频率基线对干涉图去相关影响的基础上,提出以综合相关系数为测度的公共主影像最佳选择方法。借助欧空局提供的20景大同地区ENVISAT SLC SAR图像,进行PS-InSAR公共主影像的优化选取实验。通过计算发现,指数权比对公共主影像的选择影响不大,因此建议在实际应用过程中,可直接按等指数权比计算综合相关系数,以此确定最佳公共主影像。The choice of common master image in PS-InSAR interferometry is related to the interferometric quality.Considering the spatial baselines,temporal baselines and the Doppler centroid frequency difference on interferometric decorrelation of image pairs,this paper proposed a method about optimal selection of commom master image flow to integrated correlation function.With the aid of European Space Agency providing 20 ENVISAT SLC SAR scenes over Datong,the experiments of commom master image selection in PS-InSAR were performed.Testing results showed that the weight proportion of parameters had little influence on optimum selection,and it was suggested that in the practical application,optimum selection can be determined in accordance with equal weight proportion of parameters.

关 键 词：PS-INSAR 公共主影像 去相关 优化选取 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置]