Monitoring and analysis of high-voltage transmission line tree barrier based on UAV-LiDAR
Based on the unmanned aerial vehicle LiDAR point cloud data,the LiDAR360 software was used to pre-process the point cloud data in the study area,including point cloud smoothing,resampling and denoising.Then the Kriging spatial interpolation algorithm was used to generate the digital elevation model(DEM)and digital surface model(DSM),and accuracy testing was conducted.Subsequently,the ArcGIS software was used to subtract the DSM and DEM to obtain the canopy height model(CHM).Finally,a series of spatial analysis methods based on focus sta-tistics were used to extract the height and position of a single tree from CHM.A survey was conducted on the trees along the high-voltage transmission line in the study area,mainly focusing on the horizontal and vertical distances between the trees and line.The results of the survey were compared with the tree barrier hidden danger level and the safety distance standard for high-voltage transmission line,and corresponding safety assessment results and tree barrier positions were obtained.
LiDARCHMtree height extractiontree barrier monitoringhigh-voltage transmission line
国家科技期刊平台
NSTL
万方数据
维普
