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Title |
A Study of Data Management Methods through Shake Correction of Underwater Investigation Using High Resolution Side Scan SONAR
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Authors |
이종화(Jong-Hwa Yi) ; 김영석(Young-Seok Kim) ; 박철(Chul Park) ; 최상식(Sang-Sik Choi) ; 이흥수(Heung-Su Lee) |
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DOI |
https://doi.org/10.11112/jksmi.2017.21.5.094 |
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Keywords |
사이드스캔소나 ; 수중구조물 ; 안전진단 ; 유지관리 ; 흔들림 센서 ; 흔들림 보정 알고리즘 Side Scan SONAR ; Underwater structure ; Safety inspection ; Maintenance ; Shake sensor ; Shake correction Algorithm |
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Abstract |
In the case of the side scan sonar operated by the towing method, the underwater structure electric jig was developed because there is a difficulty in the cross-sectional survey that the user wants when conducting the survey. However, in the case of the sound wave photographing method using the electric jig, since the boat and the sonar behaves as one body , data distortion has occurred due to various problems according to working environment, such as, the rolling phenomenon of the boat due to the wave and the fluctuation of the sonic image due to the inoperability of the boat driver. Therefore, in order to solve the image blurring caused by the operation of the equipment for underwater survey of the existing side scan sonar, in this research, the program was supplemented to enable the shake correction by attaching the shake correction sensor and developing the shake correction algorithm. In order to verify the improvement of the sonar data resolution, the sonic images before and after the shake correction were collected through on-site investigation and the analysis of the sonic image data acquired by a diver measuring the actual damage length and depth. This study is expected to contribute to the development of sonar imaging technique of the underwater surface of the structure and bed surface of the sea or a river using the side scan sonar in the future.
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