Analysis on the Precision of Laser Scanning Point Cloud in Underground Space

doi:10.13474/j.cnki.11-2246.2017.0382

Abstract

Abstract: The point cloud data of underground space were acquired with four kinds of laser scanning devices,and three-dimensional coordinates of the feature points in the area were measured with the total station. All data used unified spatial reference. The three-dimensional coordinates of feature points were obtained from the point cloud data separately. The analysis of two measurements showed that the accuracy of position using mobile scanning device was slightly lower than using static one,the mean square error was 0.128 m in the weakest direction,on the contrast the static was 0.039 m.The measurement precision of 1:500 DLG can be obtained by the mobile laser scanning device in the underground space.

Key words: underground space, laser scanning, point cloud, precision comparison

CLC Number:

P237

HAN Wenquan, HU Wusheng, CHEN Xin, WANG Menghe. Analysis on the Precision of Laser Scanning Point Cloud in Underground Space[J]. 测绘通报, 2017, 0(12): 72-76.

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Analysis on the Precision of Laser Scanning Point Cloud in Underground Space

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