Analysis of point cloud data accuracy of vehicle-mounted 3D laser scanning system at different speeds:a case study of Trimble MX2
As an emerging multi-sensor integrated surveying and mapping equipment,the vehicle-mounted three-dimensional(3D)laser scanning system is widely used in projects such as highway reconstruction and expansion and urban informatization.In terms of engineering practice,the accuracy of point clouds is the key factor affecting the quality of results.Starting from the efficiency of data collection and cost accounting,this paper took the 3D coordinates of the target point obtained by traditional high-precision surveying and mapping methods as the true value,analyzed the feature points with the same name in point cloud data,and evaluated the accuracy of point cloud data obtained by the vehicle-mounted laser scanning system at different vehicle speeds.According to the statistical results,the planar error of the Trimble MX2 vehicle-mounted 3D laser scanning system is around±0.10 m,and the elevation is around±0.06 m.The influence of vehicle speed on point cloud accuracy is relatively small,and the accuracy of point clouds varies slightly at different vehicle speeds.It can basically meet the requirements of small and medium-sized urban road measurement and urban component survey work.
国家科技期刊平台
NSTL
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