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MMS Accuracy Analysis for Earthwork Site Application

토공현장 적용성 검증을 위한 MMS 정밀도 분석

  • Park, Jae-woo (Construction Policy Institute, Korea Institute of Civil Engineering and Building Technology) ;
  • Kim, Seok (Dept. of Railroad Infrastructure System Engineering, Korea National University of Transportation)
  • 박재우 (한국건설기술연구원, 건설정책연구소) ;
  • 김석 (한국교통대학교 철도인프라시스템공학과)
  • Received : 2018.11.15
  • Accepted : 2019.03.12
  • Published : 2019.03.31

Abstract

Researches utilizing the fourth industrial revolution technology are being conducted as a breakthrough for improving the earthworker productivity. In order to make the earthwork site smarter, it is necessary to digitize the construction site topography at first. For this purpose, photogrammetry using drones and LiDAR on MMS have been recently used. The purpose of this study is to analyze the accuracy of LiDAR by installation angles for verifying the application of MMS in the construction site. As a result of comparing the coordinates measured by the total station and the LiDAR, a small error of about 1-2 centimeters was shown. It is confirmed that MMS could be well applied to the earthwork site. In addition, there was no significant difference in the accuracy of the acquired coordinates according to the installation angle of the LiDAR, but the shape of the point clouds was different. The larger the installation angle, the better the shape of the site terrain is measured.

Keywords

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Fig. 1 Laboratory in KICT

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Fig. 2 Inclination Measurement

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Fig. 4 Point Clouds by LiDAR

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Fig. 3 Scheme with TS coordinates

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Fig. 5 Coordinates of Box Corner scanned in 15 degrees

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Fig. 6 Coordinates of Box Corner scanned in 25 degrees

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Fig. 7 Comparison of Coordinates in 15 degrees

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Fig. 8 Comparison of Coordinates in 25 degrees

Table 1. Specification of LiDAR

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Table 1. Result of Accuracy Analysis

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