基于Sentinel-1A雷达影像的DEM提取方法

Methods for Extraction of DEM Based on Sentinel-1A Radar Images

合成孔径雷达干涉测量是一种提取数字高程模型、探测地表形变的新技术,近年来已成为快速获取精确DEM的重要手段.以Sentinel-1A雷达影像为数据源,基于InSAR技术提取日本四国岛地区的DEM.结果表明,利用InSAR生成的DEM总体上符合该地区实际地形.基于InSAR技术的Sentinel-1A雷达影像反演DEM在日本四国岛地区是行之有效的.

Synthetic aperture radar interferometry is a new technology to extract digital elevation model and detect ground deformation,which has become an important method to acquire precise DEM instantly.In this paper,the DEM of Shikoku area was built based on InSAR with Sentinel-1Aradar images being the data source.The results showed that the DEM generated in InSAR conformed to the actual terrain.Therefore,it’s feasible and effective to extract DEM of Shikoku area based on InSAR and Sentinel-1Aradar images.