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| 多回波机载LiDAR数据提取林地DEM的判别分析方法 | |
| 引用本文： | 尹艳豹,唐守正,郎璞梅,高瑞馨.多回波机载LiDAR数据提取林地DEM的判别分析方法[J].林业科学,2011,47(12). |
| 作者姓名： | 尹艳豹 唐守正 郎璞梅 高瑞馨 |
| 作者单位： | 1. 东北林业大学林学院 哈尔滨 150040 2. 中国林业科学研究院资源信息研究所 北京100091 3. 东北林业大学生命科学学院 哈尔滨150040 |
| 基金项目： | 国家973课题“主动遥感散射机理与植被三维结构参数反演”(2007CB714404); 林业公益性行业科研专项经费项目“我国典型森林类型健康经营关键技术”(201004002) |
| 摘 要： | 选取包含明显空地的林地作为建模样地,通过对其激光点云单次和多次回波数据的三维空间坐标分布、反射强度分布和垂直分布3方面特征进行探讨,进而提出基于判别分析的林地DEM提取方法.取林木郁闭并实测了大量(1 472个)地面控制点的验证样地加以检验.结果表明:对山区林地林木复杂环境的DEM提取采用判别分析的方法是可行的,其精度达到高差总平均值0.24 m,方差0.05,高差处于-0.5～0.5 m之间的数据占总量的93.85％；与直接的网格窗口划分DEM滤波模拟对照比较,其结果较优. |
| 关 键 词： | 机载激光雷达 数字高程模型(DEM) 判别分析 多重回波 |
Determination of DEM Based on Multiple-Echo Data of Airborne LiDAR in Mountainous Wooded Area Using Discriminant Analysis |
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| Yin Yanbao , Tang Shouzheng , Lang Pumei , Gao Ruixin.Determination of DEM Based on Multiple-Echo Data of Airborne LiDAR in Mountainous Wooded Area Using Discriminant Analysis[J].Scientia Silvae Sinicae,2011,47(12). | |
| Authors: | Yin Yanbao Tang Shouzheng Lang Pumei Gao Ruixin |
| Institution: | Yin Yanbao1 Tang Shouzheng2 Lang Pumei2 Gao Ruixin3(1.School of Forestry,Northeast Forestry University Harbin 150040,2.Research Institute of Forest Resources Information Techniques,CAF Beijing 100091,3.School of Life Sciences,Northeast Forestry University Harbin 150040) |
| Abstract: | Forest land with obvious open space was selected as modeling sample plot.The single-and multiple-echo airborne LiDAR data of the sample plot were obtained and analyzed in terms of three-dimensional coordinates distribution,reflection intensity distribution and vertical distribution.The forest digital elevation model(DEM) extraction method was developed using discriminant analysis.A closed forest with a large number of control points was selected for model validation.A total of 1 472 control points were meas... |
| Keywords: | airborne LiDAR digital elevation model(DEM) discriminant analysis multiple echo |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |