断裂线辅助机载LiDAR生产DEM的应用探讨

Application of fault line aided airborne in DEM production

机载LiDAR数据用于特殊区域的DEM生产时,更新周期短,效率高,但可参考借鉴的经验少,不可避免地遇到一些问题。本文以黄河干流临夏永靖至黄河石林三维场景构建项目的DEM生产为例,探究了对机载LiDAR点云数据进行数据处理的方法和以此为基础进行DEM生产的关键技术,为机载LiDAR数据在1∶1万基础测绘项目中DEM的生产更新提供借鉴。

When airborne LiDAR data is used to produce DEM in special area,the update period is short,and the efficiency is high.However,with little experience referred,some problems unavoidably occurred.This paper took the DEM production of 3D scene construction project for main steam of yellow river from Linxia Yongjing to Yellow River Stone Forest as an example,discussed the data processing method of airborne LiDAR point cloud data and the key technology of DEM production based on LiDAR point cloud data,to provide reference for the updating of DEM production of airborne LiDAR data in 1∶10,000 basic surveying and mapping project.