机载激光雷达林区数字高程模型的建立  

Establishment of DEM in Forest Area with Airborne Laser Radar

作　　者：苏永涛[1] 邢艳秋[1] 焦义涛 邢万里 尤号田[1] 

机构地区：[1]东北林业大学,哈尔滨150040

出　　处：《东北林业大学学报》2017年第10期30-34,共5页Journal of Northeast Forestry University

基　　金：黑龙江省博士后基金项目(LBH-Z15194);林业公益性行业科研专项经费(201504319);国家重点基础研究发展计划项目(2013CB733404)

摘　　要：选择地处草原和森林过渡地带的上库力农场作为研究区(E120°36'50.48″~120°52'56.53″,N50°21'11.08″~50°24'32″),由机载激光雷达Leica ALS60采集实验数据,对Terra Solid分类获取的地形点建立数字高程模型(DEM);利用IDL编译一次样条有限元内插法对点云数据进行分块处理,分析生产DEM的精度。结果表明:1.0、1.5、2.0 m三种不同分辨率的DEM精度,分别为0.034、0.078、0.096 m。The grassland and forest transition zone library force the Shang Ku Li farm as study area( E120°50.48'36″-120°52'56.53″,N50°21' 11. 08″-50° 24' 32″) were selected. The point cloud data was acquired by the airborne laser scanning( ALS) technique of Leica ALS60. The ground points were classified by the TerraS olid software,and the digital elevation model( DEM) was created by a spline finite element interpolation method which was compiled by IDL. The accuracy of DEM were 0.034,0.078,and 0.096 m when the resolution were 1.0,1.5 and 2.0 m,respectively.

关 键 词：机载激光雷达 点云数据 数字高程模型 一次样条有限元法 

分 类 号：P231[天文地球—摄影测量与遥感] P237[天文地球—测绘科学与技术]