International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
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Volume XLII-3/W10
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLII-3/W10, 825–830, 2020
https://doi.org/10.5194/isprs-archives-XLII-3-W10-825-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLII-3/W10, 825–830, 2020
https://doi.org/10.5194/isprs-archives-XLII-3-W10-825-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

  08 Feb 2020

08 Feb 2020

RESEARCH ON EVALUATION METHOD OF AIRBORNE LIDAR POSITIONING ACCURACY

Y. Zhang1,2, G. Q. Zhou1,2, S. H. Tang1,2, P. W. Xing1,2, and C. C. Huang1,2 Y. Zhang et al.
  • 1College of Geomatics and Geoinformation, Guilin University of Technology, Guilin, China
  • 2Guangxi Key Laboratory of Spatial Information and Geomatics, Guilin, China

Keywords: Airborne LIDA, Accuracy Evaluation, Simulation Calculation, Evaluation Model, Circumscribed Circle Fitting

Abstract. Due to the semi-random characteristics of ground points collected by airborne LIDAR system, it is difficult to control the laser pin points to fall on the control points with known coordinates in actual measurement, so the accuracy can not be evaluated by directly comparing coordinate data. In this paper, based on the target plate designed by air-to-ground, the fuzzy c-means clustering analysis algorithm is proposed to extract the point cloud data on the target according to the different echo intensity data of laser on different ground objects. The center point coordinates of the target were fitted by the point cloud data on the target using the method of circumscribed circle of edge points, so as to realize the plane precision and elevation accuracy of airborne LIDAR system of evaluation. The results show that the model fitting method can quickly and effectively evaluate the accuracy of airborne LIDAR, and the method is simple and feasible.