三种干涉测量距离向频谱滤波算法的性能比较  

Performance comparison between three kinds of InSAR spectral filtering algorithms in range direction

作　　者：仲伟凡[1,2] 张永红[1] 吴宏安[1] 孙广通[3] 

机构地区：[1]中国测绘科学研究院,北京100830 [2]浙江省河海测绘院,杭州310008 [3]防灾科技学院,河北三河065201

出　　处：《测绘科学》2015年第9期39-42,共4页Science of Surveying and Mapping

基　　金：国家863计划项目(2011AA120402);中国科学院数字地球重点实验室开放基金项目(2012LDE001)

摘　　要：针对合成孔径雷达干涉测量技术中的距离向频谱滤波算法研究不足的现状,该文在国内外学者研究的基础上,选取多种数据进行对比实验,重点分析基于矩形窗、Hamming窗、Kaiser窗的3种距离向频谱滤波算法的性能。结果表明基于Kaiser窗函数的滤波算法是一种适用于多源SAR影像的频谱滤波算法,该算法可以有效提高影像相干性,改善干涉条纹图质量,对提高地表高程反演和形变监测精度都具有重要的意义。Aiming at the current status that the study on the spectral filtering in range direction of In SAR technology is insufficient, the paper carried out the comparative analysis with multi-sources of data based on existing related researches, and focused on the performance of three main spectral filtering algo rithms based on rectangle window, Hamming window and Kaiser window. Result showed that the spectral filtering algorithm based on the Kaiser window function would perform the best for substantially improving the coherence and the quality of interferograms, and applicable to increase the accuracy of surface height inversion and deformation monitoring.

关 键 词：合成孔径雷达 干涉测量 距离向频谱滤波 几何失相干 相干性 

分 类 号：P228[天文地球—大地测量学与测量工程]