한국군사과학기술학회지 (Journal of the Korea Institute of Military Science and Technology)

  • 제28권3호
  • /
  • Pages.271-277
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  • 2025
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  • 1598-9127(pISSN)
  • /
  • 2636-0640(eISSN)
한국군사과학기술학회 (The Korea Institute of Military Science and Technology)
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수직선배열을 활용한 함정의 수중방사소음 측정에 관한 연구

A Study on Measuring Underwater Radiated Noise of Vessel using a Vertical Line Array

  • 김태형 (국방과학연구소 국방시험연구원) ;
  • 김성용 (국방과학연구소 국방시험연구원) ;
  • 강승희 (국방과학연구소 국방시험연구원) ;
  • 송경준 (부산대학교 기계시스템설계과)
  • Taehyeong Kim (Defense Test & Evaluation Research Institute, Agency for Defense Development) ;
  • Seongyong Kim (Defense Test & Evaluation Research Institute, Agency for Defense Development) ;
  • Seunghee Kang (Defense Test & Evaluation Research Institute, Agency for Defense Development) ;
  • Kyungjun Song (Department of Mechanical Design Engineering, Pusan National University)
  • 투고 : 2025.01.11
  • 심사 : 2025.03.20
  • 발행 : 2025.06.05
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초록

With recent advances in underwater stealth technology, the URN(Underwater Radiated Noise) levels of warships are becoming significantly low. Therefore, low background noise is essential to measure the URN of these ships accurately. In order to meet this condition, it requires an array-based URN measurement system and a measurement procedure that is more robust against background noise than a traditional single-sensor system. In this study, we propose a measurement procedure that utilizes a VLA(Vertical Line Array) configuration combined with underwater acoustic telemetry to determine both the distance and bearing of the target vessel. By incorporating near-field beamforming, the proposed system can effectively suppress background noise through array gain. To validate the proposed measurement procedure, verification experiments were conducted using isotropic acoustic source. The results of these experiments demonstrated that the VLA-based URN measurements were in close agreement with the reference levels obtained from a single hydrophone placed at 1m. Subsequently, the procedure was applied to a full-scale vessel under drafting conditions. The results showed that the beamforming-based VLA approach provides comparable source level measurements to those obtained with a single sensor, while effectively suppressing unwanted noise from underwater telemetry.

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과제정보

이 논문은 2024년 국방과학연구소 동해시험장 건설 사업의 재원으로 수행된 연구 결과임.

참고문헌

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