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공공데이터를 활용한 선박 통행량 및 해양기상정보의 수중 주변소음에 대한 영향성 분석
김용국,국영민,김동관,김규철,윤상기,최창호,김홍국,Kim, Yong Guk,Kook, Young Min,Kim, Dong Gwan,Kim, Kyucheol,Youn, Sang Ki,Choi, Chang-Ho,Kim, Hong Kook 한국음향학회 2020 韓國音響學會誌 Vol.39 No.6
In this paper, we analyze the influences of ship traffic and marine weather information on underwater ambient noise. Ambient noise is an important environmental factor that greatly affects the detection performance of underwater sonar systems. In order to implement an automated system such as prediction of detection performance using artificial intelligence technology, which has been recently studied, it is necessary to obtain and analyze major data related to these. The main sources of ambient noise have various causes. In the case of sonar systems operating in offshore seas, the detection performance is greatly affected by the noise caused by ship traffic and marine weather. Therefore, in this paper, the impact of each data was analyzed using the measurement results of ambient noise obtained in coastal area of the East Sea of Korea, and public data of nearby ship traffic and ocean weather information. As a result, it was observed that the underwater ambient noise was highly correlated with the change of the ship's traffic volume, and that marine environment factors such as wind speed, wave height, and rainfall had an effect on a specific frequency band.
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수중 복합 센서를 이용한 수중로봇(ROV)의 햅틱 원격제어
이찬일,최창호,문광호,국영민 대한전자공학회 2023 전자공학회논문지 Vol.60 No.1
This paper proposes a haptic teleoperation method for a ROV with multiple underwater sensors. New type of 4-DOF haptic master device is proposed for ROV teloperation and several haptic teleoperation algorithms for increasing the intuitveness of the remote operation of ROV is introduced. Discrete haptic pattern generation method is introduced for providing a clicking feeling to the operator when they are controlling the depth of the ROV and it was experimentally tested. Adaptive haptic feedback method depends on approaching velocity to the obstacle is introduced and also experimentally tested. It is proposed to aptic feedback scheme to intuitively provide a speed difference between the desired speed command and the actual speed of the ROV, and a method to intuitively deliver information to the operator rather than the visual feedback scheme used in the past. The proposed scheme demonstrates the feasibility of teleoperation of haptic feedback schemes to improve teleoperation performance by intuitively communicating information to operators using haptic.
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