利用InSAR技术获取南昆仑DEM

Obtaining DEM of Southern Kunlun Area by InSAR Technology

合成孔径雷达干涉测量(InSAR,Synthetic Aperture Radar Interferometry)是一种获取地面数字高程模型(DEM)和探测地面微小形变的新技术。本文介绍了荷兰Delft理工大学开发的Doris软件生成DEM的流程,分析了InSAR技术生成DEM的误差源,并利用南昆仑地区的数据获取了该区的数字高程模型,最后将获取的DEM与SRTM DEM进行了精度比较分析,认为在植被稀少区用InSAR技术获取的DEM完全能满足常规地形图的精度需求。

InSAR （Synthetic Aperture Radar Interferometry） is a new technology for achieving DEM and detecting surface deformation. This paper introduces the flow of achieving DEM in Doris. Then it analyzes the error source of achieving DEM from InSAR. Finally, it obtains DEM of the southern Kunlun area, and compares it with SRTM DEM. The result is that in the mountainous area, InSAR DEM can meet the need of general mapping.