InSAR技术获取高山峡谷区DEM精度研究  

Research on the DEM Precision of Canyon Acquired by InSAR Technique

作　　者：黄洁慧[1] 谢谟文[1] 王增福[1] 刘翔宇[1] 付强[1] 

机构地区：[1]北京科技大学土木与环境工程学院

出　　处：《遥感信息》2012年第1期62-67,共6页Remote Sensing Information

摘　　要：通过对金沙江河段高山峡谷区L波段的Alos-Palasar和C波段的Radarsat-2雷达单视复数数据的干涉处理,获取此区域的数字高程模型(DEM)。利用SRTM 90m分辨率的DEM为参考数据,通过对比分析发现InSAR技术生成的DEM精度与相干系数、地形和波长有密切的关系。同时也验证了在相干性好,地形起伏不太剧烈的地区,用InSAR技术生成DEM是可行的。Through interferometric processing of L-band Alos-Palasar and C-band Radarsat-2 single look complex data,the Digital Elevation Model（DEM） of the canyon along Jinsha River can be obtained.With comparison and analysis of 90m resolution SRTM DEM,a conclusion has been made that precision of DEM produced by InSAR technology is closely related to correlation coefficient,topography and wavelength.Meanwhile it also proved that it is feasible to produce DEM by InSAR technology in the good coherence and flat terrain areas.

关 键 词：雷达干涉测量 数字高程模型(DEM) 精度分析 ALOS-Palasar RADARSAT-2 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置]