Vol. 5 No. 01 (2024)
Articles

Performance Assessment of Mobile Laser Scanning Systems Using Velodyne Hdl-32e

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  • Bashar Alsadik
Bashar Alsadik
Department of Earth Observation Science, ITC Faculty, University of Twente, The Netherlands
DOI: https://doi.org/10.38094/jocef50177

Published 2024-03-02

Keywords

  • Mobile mapping systems,
  • LiDAR,
  • Velodyne HDL-32,
  • defected beams,
  • quality control,
  • 3D simulation,
  • point density
    • ...More
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How to Cite

[1]
B. . Alsadik, “Performance Assessment of Mobile Laser Scanning Systems Using Velodyne Hdl-32e ”, JoCEF, vol. 5, no. 01, pp. 7-12, Mar. 2024.

Copyright (c) 2024

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

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Abstract

Mapping systems using multi-beam LiDARs are widely used nowadays for different geospatial applications graduating from indoor projects to outdoor city-wide projects. These mobile mapping systems can be either ground-based or aerial-based systems and are mostly equipped with inertial navigation systems INS. The Velodyne HDL-32 LiDAR is a well-known 360° spinning multi-beam laser scanner that is widely used in outdoor and indoor mobile mapping systems. The performance of such LiDARs is an ongoing research topic which is quite important for the quality assurance and quality control topic. The performance of this LiDAR type is correlated to many factors either related to the device itself or the design of the mobile mapping system. Regarding design, most of the mapping systems are equipped with a single Velodyne HDL32 in a specific orientation angle which is different among the mapping systems manufacturers. The LiDAR orientation angle has a significant impact on the performance in terms of the density and coverage of the produced point clouds. Furthermore, during the lifetime of this multi-beam LiDAR, one or more beams may be defected and then either continue the production or returned to the manufacturer to be fixed which then cost time and money. In this paper, the design impact analysis of a mobile laser scanning (MLS) system equipped with a single Velodyne HDL-32E will be clarified and a clear relationship is given between the orientation angle of the LiDAR and the output density of points. The ideal angular orientation of a single Velodyne HDL-32E is found to be at 35° in a mobile mapping system. Furthermore, we investigated the degradation of points density when one of the 32 beams is defected and quantified the density loss percentage and to the best of our knowledge, this is not presented in literature before. It is found that a maximum of about 8% point density loss occurs on the ground and 4% on the facades when having a defected beam of the Velodyne HDL-32E. 

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