机载LiDAR点云获取与高精度DEM建设关键技术探讨

Research on key technologies of acquisition of airborne LiDAR point cloud data and high-precision DEM

结合广东省机载LiDAR点云获取与高精度DEM建设项目,介绍了项目总体技术路线,针对项目难点,从设备选择、点云密度设计、植被覆盖密集山区数据获取方法、点云数据分类组合算法、空白区处理等5个方面的关键技术进行了探讨,并提出解决方案,为同类项目的设计与实施提供参考。

This paper introduces the general technical route based on the airborne LiDAR point cloud data acquisition and highprecision DEM construction in Guangdong Province. For solving the difficulties,the paper researched some key technologies and solutions from five aspects: equipment selection,point cloud density design,data obtained method in mountainous areas covered densely,point cloud data classification and combination algorithm,and blank area processing. Research of this paper will be beneficial for the design and implementation of similar projects.