Drone Laser Scanning for Modeling Riverscape Topography and Vegetation: Comparison with Traditional Aerial Lidar
Drone Laser Scanning for Modeling Riverscape Topography and Vegetation: Comparison with Traditional Aerial Lidar
复制标题
用于河流景观地形和植被建模的无人机激光扫描：与传统空中激光雷达的比较
作者：
Jonathan P. Resop;L. Lehmann;W. Hession
几十年来，激光雷达遥感一直被用于调查河道和河漫滩地形。然而，传统的平台，如飞机上的空中激光扫描（ALS），具有包括飞行高度和扫描角度在内的限制，这些限制阻止了扫描仪收集河流景观的完整调查。无人机激光扫描（DLS）或基于无人机（UAV）的激光雷达提供了扫描河流景观的方法，与ALS相比具有许多潜在优势。我们比较了点云和激光雷达数据产品产生的DLS和ALS的一个小砾石床流，斯特劳斯溪，位于弗吉尼亚州布莱克斯堡。激光雷达数据点被分类为地面和植被，然后栅格化，以产生数字地形模型（DTM）表示的地形和冠层高度模型（CHM）表示的植被。结果强调，低海拔，高分辨率的DLS数据比ALS更能够提供详细的通道配置文件，以及检测洪泛区的小植被。DLS获得的更多细节将为河流研究人员提供对河景地形和植被物理特性的更好估计。
Lidar remote sensing has been used to survey stream channel and floodplain topography for decades. However, traditional platforms, such as aerial laser scanning (ALS) from an airplane, have limitations including flight altitude and scan angle that prevent the scanner from collecting a complete survey of the riverscape. Drone laser scanning (DLS) or unmanned aerial vehicle (UAV)-based lidar offer ways to scan riverscapes with many potential advantages over ALS. We compared point clouds and lidar data products generated with both DLS and ALS for a small gravel-bed stream, Stroubles Creek, located in Blacksburg, VA. Lidar data points were classified as ground and vegetation, and then rasterized to produce digital terrain models (DTMs) representing the topography and canopy height models (CHMs) representing the vegetation. The results highlighted that the lower-altitude, higher-resolution DLS data were more capable than ALS of providing details of the channel profile as well as detecting small vegetation on the floodplain. The greater detail gained with DLS will provide fluvial researchers with better estimates of the physical properties of riverscape topography and vegetation.
影响因子：
3.4
作者：
Clubb, Fiona J.;Mudd, Simon M.;Limaye, Ajay B.
通讯作者：
Limaye, Ajay B.