Research on DEM Reconstruction Based on Airborne 2D Laser Radar

A kind of Digital Elevation Model reconstruction method based on airborne two-dimensional lidar is proposed in this paper. This method has solved the limitation of long time, not moving and the angle of measurement of 3D imaging radar sensor during the process of mapping. The data acquisition and the position and attitude parameters of aircraft platform are continuously updating during the detection process combined with the advantages of visual sensors and 2D lidar sensors. The terrain entropy is used for matching the two-dimensional images and three-dimensional digital maps. The simulation is carried out in the laboratory environment, and the reconstruction of the DEM is completed. This method can be used for the real-time mapping of DEM, it is an important reference for the development of target recognition technology.