Application of Airborne RadarTechnology in DEM Production

Abstract

Since its appearance, airborne laser scanning technology has become more convenient and modern with the continuous progress and development of science and technology. Airborne LiDAR has a very wide range of applications in various fields. It can obtain the three-dimensional coordinates of the measured object comprehensively and with high quality. It has the advantages of high efficiency and high precision in DEM production. In this paper, DEM is produced in an area near Guantao County, Handan City. Firstly, airborne LiDAR is used to collect 3D laser point cloud data, and then software is used to process the point cloud. TerraSolid software is used to perform coordinate conversion and point cloud classification on the point cloud, and finally DEM is produced on the classified ground points. The result is a realistic and intuitive 3D model. The results show that the 3D point cloud data collected by airborne LiDAR can fully and accurately reflect the topographic and geomorphic information, and the software tools and algorithms in the processing process can effectively improve the availability and accuracy of the data, and the generated DEM data can provide important data support for terrain analysis, urban planning, natural resource management and other fields.