基于资源三号卫星立体像对的DEM提取实验及其应用——以拉萨市城关区为例  

DEM Extraction Based on ZY-3 Stereo Pairs and Application:Taking Lhasa City as an Example

作　　者：陈银[1] 罗小军[1] 七珂珂 刘穗君 CHEN Yin;LUO Xiaojun;QI Keke;LIU Suijun(Southwest Jiaotong University,Chengdu 611756,China)

机构地区：[1]西南交通大学,四川成都611756

出　　处：《测绘与空间地理信息》2019年第2期65-67,72,共4页Geomatics & Spatial Information Technology

基　　金：国家自然科学基金--联合CORS网络的高分辨率PSI大气延迟改正(41271448)资助

摘　　要：利用测绘卫星立体像对提取DEM效率高、精度高。本实验的主要目的是进行资源三号测绘卫星立体像对高海拔地区DEM提取实验,比较正视、前视及后视3种视角全色影像不同组合情况的立体像对所提取DEM的效果,以拉萨市城关区为实验区,并将实验结果与SRTMDEM进行比较。实验结果显示,正视与前、后视组成的立体像对提取的DEM效果相当,均好于前视、后视全色影像组成的立体像对提取得到的DEM,拉萨市城关区空间分辨率可达10 m,效果良好,可为城市地质灾害评价等提供基础数据。DEM extracted by stereo satellite mapping has the advantages of high-accura and efficiency.The purpose of this paper is experiment DEM Extraction based on ZY-3 Stereo Pairs in high elevations,compared the effects of different combinations of front,forward and back view.It is proved that the result of the combination of the front and the back view is better,and the height accuracy of DEM can reach 10m,can provide the basic data for city geological disaster evaluation.

关 键 词：资源三号 DEM提取 立体像对组合 拉萨市 

分 类 号：P228[天文地球—大地测量学与测量工程]