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A Study on the Torpedo Sonar Simulation for Combat System by Modeling Target and Noise

전투체계를 위한 표적 및 주변소음 모델링을 통한 어뢰소나 표적탐지 시뮬레이션 연구

  • Kim, Yong (Maritime Combat System, Submarine R&D, LIG Nex1 Co., Ltd.) ;
  • You, Hyun Seung (Maritime Combat System, Submarine R&D, LIG Nex1 Co., Ltd.) ;
  • Kim, Seung Hwan (Maritime Combat System, Submarine R&D, LIG Nex1 Co., Ltd.) ;
  • Ji, Jae Kyung (Maritime Combat System, Submarine R&D, LIG Nex1 Co., Ltd.)
  • 김용 (LIG넥스원(주) 해양1연구소) ;
  • 유현승 (LIG넥스원(주) 해양1연구소) ;
  • 김승환 (LIG넥스원(주) 해양1연구소) ;
  • 지재경 (LIG넥스원(주) 해양1연구소)
  • Received : 2020.07.21
  • Accepted : 2020.11.06
  • Published : 2020.12.05

Abstract

In environment of torpedo firing, underwater acoustic signal is generated by target and noise. Sound wave which is generated from acoustic signal is propagated by seawater and it is received through the sonar(sound navigation and ranging) system mounted on torpedo. In the ocean, acoustic signal or sound wave from target that is generated by the spread of broadband can be attenuated by ambient noise and can be lost by medium and environment. This research is designed to support teamwork training in Naval operations by constructing a simulation system that is more similar to the real-world conditions. This paper attempts to research the modeling of target detection and to develop the simulation of torpedo sonar(TOSO). In order to develop the realistic simulation, we researched the broadband sound modeling of target and noise source, the modeling of acoustic transmission loss by chemical component of seawater, and the modeling of signal attenuation by ambient noise environment which is approximated by experimental measurements in seawater surrounding the Korea Peninsular and by experience of Navy's actual torpedo firing. This research contributed to constructing more practical simulation of torpedo firing in real time and the results of this research were used to develop a teamwork training system for the Navy and their education.