复杂艰险山区高分辨率DEM制作方法应用分析  

Application Analysis of the Methods of Creating High-resolution DEM in Challenging Mountainous Areas

作　　者：包建强 王义[1] 许懿娜[1] 孙越乔 BAO Jianqiang;WANG Yi;XU Yina;SUN Yueqiao(China Railway Eryuan Engineering Group Co.,Ltd.,Chengdu 610031,China)

机构地区：[1]中铁二院工程集团有限责任公司,成都610031

出　　处：《高速铁路技术》2023年第3期74-80,共7页High Speed Railway Technology

摘　　要：针对复杂艰险山区高分辨DEM原始数据形式多样、制作方法众多的现状,本文研究了基于不同原始数据下的多种DEM制作方法的优劣性和应用场景。以复杂艰险山区的机载LiDAR点云和等高线、高程点数据作为原始数据,利用ANUDEM法、构TIN法、自然邻域法和反距离加权法等4种常用插值方法制作高分辨率DEM,对基于不同原始数据下利用不同方法制作DEM的精度和效率进行了对比分析。研究结果表明:(1)自然邻域法和构TIN法,制作效率高,地形保真性最优,适用于复杂艰险山区高分辨率DEM生产;(2)ANUDEM法效率较低,适用性较差。Considering that high-resolution DEM raw data in challenging mountain areas are in various forms and there are many modeling methods,this paper studies the pros and cons and the application scenarios of various methods of creating DEM based on different raw data.For this purpose,high-resolution DEMs were formed by the ANUDEM method,TIN method,natural neighbor method,and inverse distance weighting method with airborne LiDAR point cloud,contour,and elevation point data as raw data,and the accuracy and efficiency of DEM made by different methods with different raw data were compared and analyzed.The results show that:(1)the natural neighbor method and TIN method have high efficiency and optimal terrain fidelity,and are suitable for creating high-resolution DEM in challenging mountain areas;(2)the ANUDEM method has low efficiency and poor applicability.

关 键 词：复杂艰险山区 高分辨率DEM 空间插值 应用分析 

分 类 号：P208[天文地球—地图制图学与地理信息工程]