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http://dx.doi.org/10.11108/kagis.2021.24.3.032

Method to Improve the Location Accuracy of GPR Data for Underground Information Precise Detecting  

RYU, Jisong (Korea Institute of Civil engineering and Building Technology)
JANG, Yonggu (Korea Institute of Civil engineering and Building Technology)
PARK, Donghyun (Korea Institute of Civil engineering and Building Technology)
Publication Information
Journal of the Korean Association of Geographic Information Studies / v.24, no.3, 2021 , pp. 32-40 More about this Journal
Abstract
Underground information is difficult to visually check, which can lead to a huge accident in the event of a safety accident. Recently, the Ministry of Land, Infrastructure and Transport intends to reduce safety accidents caused by the aging or damage of underground facilities through the Special Act on Underground Safety Management. GPR is increasingly being used as a technology to acquire information in underground spaces that are difficult to see with the naked eye. However, GPR's location information is corrected by checking images of CCTV and GPS information acquired during exploration. This method has an average error of about 2 meters. In this works, We used LiDAR to calibrate the GPR information and found that the error was reduced from at least 7cm to up to 40cm. If accurate GPR information collected in the future is analyzed quickly using AI, etc., it will be able to collect and utilize underground information faster than it is now to secure safety.
Keywords
Underground information; Precise detecting; GPR; LiDAR; Improve accuracy;
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