SRTM DEM与ASTER GDEM精度对比分析与验证  

Comparative Analysis and Verification of Accuracy between SRTM DEM and ASTER GDEM

作　　者：吴桥军 李永超 WU Qiao-jun;LI Yong-chao(The 103 Geological Brigade,Bureau of Geology and Mineral Resources of Guizhou Province)

机构地区：[1]贵州省地矿局一〇三地质大队

出　　处：《智能建筑与智慧城市》2023年第3期35-37,共3页Intelligent Building & Smart City

摘　　要：数字高程模型(Digital Elevation Model,DEM)在生产中有着重要作用。文章分析了目前两种全球大范围覆盖的免费DEM产品(ASTER GDEM和SRTM DEM)的精度,并使用大同地区合成孔径雷达差分干涉数据结果展现了两者的差异。结果表明:SRTM DEM 30m分辨率的DEM数据精度优于ASTER GDEM。Digital Elevation Model(DEM) plays an important role in national production. This paper analyzes the accuracy of two kinds of free DEM products(ASTER GDEM and SRTM DEM) with global wide coverage, and shows the difference between them by using the results of the differential interferometry data of synthetic aperture radar in Datong region. The results show that the data accuracy of the DEM data of SRTM DEM with 30m resolution is better than ASTER GDEM.

关 键 词：DEM SRTM ASTER 数据精度 精度分析 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置]