Abstract:

In recent years, airborne LiDAR technology has been applied to power, forestry, surveying and mapping and so on. Compared with optical image, LiDAR point cloud data has unique advantages in surveying and mapping. This paper attempts to use airborne LiDAR technology to survey and map 1:10 000 scale 3D (DLG, DEM, DOM) products, summarizes the technological process and precision analysis method of airborne LiDAR 3D products, and selects desert areas as experimental areas to verify the feasibility of this technology in desert areas to produce 3D products. The method can satisfy the requirement of 1:10 000 scale 3D basic data production in desert area, and has the advantages of small outdoor workload, high automation, fast mapping, high elevation accuracy, and small environmental impact. At the same time, the method is also summarized. This method provides a useful reference for the acquisition of 3D basic surveying and mapping data in desert areas.

Key words: airborne LiDAR, point cloud classification, single chip for digital mapping, DEM, DOM, DLG