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J. Korean Soc. Hazard Mitig. > Volume 18(7); 2018 > Article
하천방재
Journal of the Korean Society of Hazard Mitigation 2018;18(7):563-568.
DOI: https://doi.org/10.9798/KOSHAM.2018.18.7.563    Published online December 31, 2018.
UAV와 음향측심기를 활용한 저수지의 3차원 지형정보 분석
송봉근1, 오주연2, 김성삼3, 이태욱4, 박경훈5
1정회원, 국립재난안전연구원 재난원인조사실 책임연구원
2정회원, 국립재난안전연구원 재난원인조사실 연구원
3정회원, 국립재난안전연구원 재난원인조사실 시설연구사
4정회원, 국립재난안전연구원 재난원인조사실 연구원
5정회원, 창원대학교 토목환경화공융합공학부 교수
Analysis of 3D Topographic Information on Reservoir Using UAV and Echo Sounder
Bonggeun Song1, Ju Yeon Oh2, Seong Sam Kim3, Tae Wook Lee4, Kyung Hun Park5
1Member, Principal Researcher, Disaster Scientific Investigation Division. National Disaster Management Research Institute
2Member, Researcher, Disaster Scientific Investigation Division. National Disaster Management Research Institute
3Member, Researcher, Disaster Scientific Investigation Division. National Disaster Management Research Institute
4Member, Researcher, Disaster Scientific Investigation Division. National Disaster Management Research Institute
5Member, Professor, School of Civil, Environmental and Chemical Engineering, Changwon National University
Corresponding author:  Bonggeun Song, Tel: +82-52-928-8274, Fax: +82-52-928-8299, 
Email: pureguy55@gmail.com
Received: 10 September 2018   • Revised: 11 September 2018   • Accepted: 8 October 2018
Abstract
The purpose of this study is to analyze the 3D geoinformation of a reservoir using a UAV and an echo sounder for effectively monitoring drought conditions in the reservoir. Water surface boundaries were analyzed using RGB imagery obtained by the UAV. Depth information was collected with the echo sounder, which was adapted for unmanned boats in this study. The obtained 3D geoinformation was analyzed using spatial interpolation methods. The maximum depth of the reservoir was determined as 3.2 m. The reservoir bed information differed according to the precision of unmanned boat operation; therefore, improvement in unmanned boat operation is required to accurately analyze the 3D geoinformation of a reservoir.
Key Words: UAV, Echo Sounder, Reservoir Bed, Geoinformation, GIS
요지
본 연구는 저수지의 가뭄현상의 효율적인 모니터링을 위해 UAV 및 음향측심기를 활용하여 저수지의 3차원 지형정보를 분석하였다. UAV 영상정보 취득을 통해 저수지 수면 경계 분석하였고, 무인보트에 탑재된 음향측심기에서 취득된 수심정보를 획득하였다. 그리고 공간내삽기법을 통해 3차원 지형정보를 분석하였다. 분석결과, 저수지의 수심은 최고 3.2 m로 나타났다. 저수지의 하상은 무인보트 운용의 정밀성에 따라 결과값의 차이가 있는 것으로 나타났다. 따라서 보다 정밀한 저수지의 3차원 지형정보를 분석하기 위해서는 무인보트의 자동항법기능 추가 등 운용방법에서 개선이 필요할 것으로 보인다.
핵심용어: 무인기, 음향측심기, 저수지 하상, 지형정보, 지리정보시스템


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