Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography (한국측량학회지)

Korean Society of Surveying, Geodesy, Photogrammetry and Cartography (한국측량학회)
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Earth-Volume Measurement of Small Area Using Low-cost UAV

저가형 UAV를 이용한 소규모지역의 토량 측정

  • Seong, Ji Hoon (Dept. of Spatial Information, Kyungpook National University) ;
  • Han, You Kyung (School of Convergence & Fusion System Engineering, Kyungpook National University) ;
  • Lee, Won Hee (School of Convergence & Fusion System Engineering, Kyungpook National University)
  • Received : 2018.03.23
  • Accepted : 2018.05.08
  • Published : 2018.08.31
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Abstract

In the civil works, the measurement of earth-volume is one of the important elements in the estimation of the reasonable construction cost. Related studies mainly used GPS (Global Positioning System) or total station to obtain information on civil work areas. However, these methods are difficult to implement in inaccessible areas. Therefore, the aim of this paper is to use the UAV (Unmanned Aerial Vehicle) to measure the earth-volume. The study area is located in a reservoir construction site in Sangju-si, Gyeongsangbuk-do, Republic of Korea. We compared the earth-volume amounts acquired by UAV-based surveying to ones acquired by total station-based and GPS-based surveying, respectively. In the site, the amount of earth-volume acquired by GPS was $147,286.79m^3$. The amount of earth-volume acquired by total station was $147,286.79m^3$, which is the 96.13% accuracy compared to the GPS-based surveying. The earth-volume obtained by UAV was $143,997.05m^3$ when measured without GCPs (Ground Control Points), $147,251.71m^3$ with 4 GCPs measurement, and $146,963.81m^3$ with 7 GCPs measurement. Compared to the GPS-based surveying, 97.77%, 99.98%, and 99.78% accuracies were obtained from the UAV-based surveying without GCP, 4 GCPs, and 7 GCPs, respectively. Therefore, it can be confirmed that the UAV-based surveying can be used for the earth-volume measurement.

토목공사에서 토량 측정은 합리적인 공사비 산정에 중요한 요소 중 하나이다. 이전까지 토목공사 현장의 정보를 얻기 위해서 GPS 또는 토탈스테이션을 이용하는 방법을 사용해 왔지만 이러한 방식은 접근이 어려운 지역에는 측정에 무리가 있다. 이에 본 연구에서는 무인항공기를 이용하여 토량을 측정하고자 한다. 경상북도 상주시에 위치한 농촌용수개발사업 저수지 공사현장을 연구대상지로 선정하였으며, GPS를 이용한 측량을 기준으로 하여 토탈스테이션 그리고 UAV를 이용한 측량의 정확도와 측정시간을 비교하는 연구를 진행하였다. GPS를 이용하여 취득한 토량은 $147,286.79m^3$으로 나타났고, 토탈스테이션은 $141,594.07m^3$으로 GPS를 이용하여 구한 토량을 기준으로 96.13% 정확도를 보였다. 그리고 UAV는 GCP를 측정하지 않고 진행하였을 때 $143,997.05m^3$, GCP가 4개일때 $147,251.71m^3$ 그리고 GCP가 7개일 때 $146,963.81m^3$로 나타났고, 각각 GPS로 측량한 토량과 비교하여 97.77%, 99.98%, 99.78%의 정확도를 보였다. 이를 통하여 UAV를 이용한 토량 산정을 실제 현장에서 사용할 수 있음을 확인할 수 있었다.

Keywords

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