标题：Comparison of impacts of control errors and measurement errors of working parameters on accuracies of point cloud products from airborne LiDAR
作者：Wang, Jianjun ;Li, Xiaolu ;Xu, Tongle ;Li, Dongxing ;Huo, Wenxiao
作者机构：[Wang, Jianjun ;Xu, Tongle ;Li, Dongxing ;Huo, Wenxiao ] School of mechanical Engineering, Shandong University of Technology, Zibo; Shandong; 255049, 更多
来源：Zhongguo Jiguang/Chinese Journal of Lasers
摘要：In airborne LiDAR, some working parameters have both control errors and measurement errors, such as attitude angles, flight trajectories, and scan angle of laser scanner. Both kinds of errors can deteriorate qualities of point cloud products. In order to find out compensation measures to improve accuracies of point cloud and the reconstructed digital surface model (DSM), impacts of the two kinds of errors are analyzed theoretically. Then, through numerical simulation, the working process of airborne LiDAR is simulated. The two kinds of errors of attitude angle parameters are taken as an example, and effects of attitude control errors and measurement errors on accuracies of point cloud products are quantitatively evaluated and compared. Simulation results show that, the qualities of point cloud products from airborne LiDAR depend on common impacts of the control errors and measurement errors. The control errors mainly cause varying of point density and distribution area of point cloud, resulting in decreasing of spatial sampling resolution of point cloud, the measurement errors mainly cause decreasing of positioning accuracy of point cloud. Both errors can add distortion to the reconstructed DSM. Therefore, it is necessary to take appropriate measures to compensate the impacts of the two kinds of errors, respectively.
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