使用SAR影像生成DEM的精度分析  

Methodology of DEM generation with SAR imagery and its accuracy analysis

作　　者：荆创利[1] 李何超[1] 胡绍永[1] 戈乐[1] 葛洁[1] 

机构地区：[1]四川省国土勘测规划研究院,成都610031

出　　处：《测绘科学》2010年第6期170-172,共3页Science of Surveying and Mapping

摘　　要：雷达干涉测量(InSAR)和雷达立体测量(Radargrammetry)是使用SAR影像生成DEM的两种主动遥感新技术,前者利用反射雷达波的相位信息,而后者利用其灰度信息。本文利用ERS-1/2卫星对香港地区成像获取的SAR影像分别构成干涉像对和立体像对生成了DEM,并以外部DEM为参考,利用对比和统计方法分析了两种测量方法的精度情况和技术优势。SAR Interferometry （InSAR） and Radargrammetry are two new technologies of the active remote sensing,and the former uses the phase information of the Radar reflected wave,and the latter uses the gray information.The multiple SAR images acquired by ERS-1/2 over Hong Kong were used to form several interferometric pairs and stereo pairs for DEM creation,and this paper analyzed the precision and technical advantages of these two measurement methods using antitheses and statistical methods taking the external DEM as reference.

关 键 词：合成孔径雷达(SAR) 雷达干涉测量 雷达立体测量 相位解缠 DEM 

分 类 号：P23[天文地球—摄影测量与遥感]