ALOS-PRISM立体像对提取DEM的应用研究  

Study on DEM extraction by ALOS-PRISM stereo pair

作　　者：蔡庆空[1] 蒋金豹[1] 张玲[1] 李二俊[2] 

机构地区：[1]中国矿业大学(北京)地球科学与测绘工程学院,北京100083 [2]长安大学地质工程与测绘学院,西安710054

出　　处：《测绘科学》2014年第1期70-73,共4页Science of Surveying and Mapping

基　　金：国际科技合作项目(2010DFA3290);国家自然科学基金项目(41101397)

摘　　要：本文使用ALOS-PRISM高分辨率立体像对数据提取DEM;针对DEM精度评定过程中地形单一的问题,文中着重分析了DEM在不同地形条件下的精度情况,通过与1∶50 000实测DEM比较分析,结果表明在无植被覆盖的平原地区DEM精度最高,高程中误差可以达到4.46m;其次是城区,山区最差,与同类卫星产品相比该精度已有很大的提高,因此ALOS-PRISM的应用可以为我们快速获取高精度的DEM提供一种新的途径。This paper extracted DEM based on advanced ALOS-PRISM high resolution stereo images. Aiming at the problem of single topography during DEM accuracy assessment, the authors paid great at- tention on the accuracy of DEM data under different terrain condition （mountains, plains and urban area） . By contrast with 1 ： 50 000 measured DEM, result indicated that DEM accuracy is the best in the flat re- gion without vegetation covered, the RMSE of DEM was 4.46m, followed by city area, and the worst is mountain area, but this result was compared with other similar products, which provides a new way to create high accuracy DEM quickly.

关 键 词：ALOS立体像对 PRISM RPC模型 DEM提取 精度评定 

分 类 号：P236[天文地球—摄影测量与遥感]