基于机载激光雷达的密林山区测绘研究

Research on Surveying and Mapping of Dense Forest Mountain Area Based on Airborne Lidar

为了有效解决密林山区测绘高程相关问题,基于机载激光雷达(机载Lidar)技术穿透地表植被,进行密林山区点云数据采集,以点云滤波方式获取地表点高程数据信息,与既有RTK方式所采集高程数据对比分析综合精确度。通过实验分析,结果表明机载激光雷达在密林山区地表点测绘中具备较高密度与精确度,可在很大程度上满足密林山区地形测绘相关要求。

In order to effectively solve the problems related to elevation surveying and mapping in densely forested mountainous areas,the airborne lidar technology is used to penetrate the surface vegetation,collect the point cloud data in densely forested mountainous areas,obtain the surface point elevation data information by point cloud filtering,and compare and analyze the comprehensive accuracy with the elevation data collected by the existing RTK method.Through the experimental analysis,the results show that airborne lidar has high density and accuracy in the mapping of surface points in dense forest mountain areas,which can largely meet the requirements of terrain mapping in dense forest mountain areas.