Research on the Accuracy of LiDAR Acquisition Cross-Section and Traditional Measurement Methods
At present,the research on LiDAR point cloud is mainly focused on engineering applications,but less on precision.Based on the purpose of exploring the accuracy of cross-section measured by LiDAR,the accuracy of the measurement of earth volume by Li-DAR technology is verified by experiment.The main method is to obtain two-phase point cloud data from the same location by air-borne LiDAR,and select one phase to generate DEM to simulate terrain data,while the other phase is point cloud measurement data.Through comparative analysis of the calculation of the earth volume of the two cross-sections with different densities of data,the accu-racy of the cross-sections obtained by LiDAR point cloud can fully reach the level of manual measurement with its good penetration a-bility and high point density,and meet the needs of survey and design.
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