The Journal of the Acoustical Society of Korea (한국음향학회지)

The Acoustical Society of Korea (한국음향학회)
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Research trends of biomimetic covert underwater acoustic communication

생체모방 은밀 수중 음향 통신 연구 동향

  • Received : 2022.01.13
  • Accepted : 2022.03.04
  • Published : 2022.03.31
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Abstract

Covert Underwater Communication (CUC) signals should not be detected by other unintended users. Similar to the method used in Radio Frequency (RF), covert communication technique sending information underwater is designed in consideration of the characteristics of Low Probability of Detection (LPD) and Low Probability of Intercept (LPI). These conventional methods, however, are difficult to be used in the underwater communications because of the narrow frequency bandwidth. Unlike the conventional methods of reducing transmission power or increasing the modulation bandwidth, a method of mimicking the acoustic signal of an underwater mammal is being studied. The biomimetic underwater acoustic communication mainly mimics the click or whistle sound produced by dolphin or whale. This paper investigates biomimetic communication method and introduces research trends to understand the potential for the development of such biomimetic covert underwater acoustic communication and future research areas.

은밀 수중 통신은 수중에서 신호를 전송할 때 다른 대상이 감지하지 못하도록 보내는 통신 방법이다. 수중에서 정보를 은밀하게 보내는 방법은 Radio Frequency(RF)에서 사용되는 방법과 유사하게 Low Probability of Detection(LPD)와 Low Probability of Intercept(LPI)의 특성을 고려하여 설계된다. 그러나 수중에서 음향을 이용하여 통신하는 경우 협소한 주파수 대역폭으로 인해 은밀성을 확보하기 어렵다. 기존의 신호 전송 전력을 낮추거나 변조 대역폭을 늘리는 방법과는 다르게 수중 포유류의 음향 신호를 모방하여 신호를 보내는 방법이 연구되고 있다. 생체모방 은밀 수중향통신은 주로 돌고래나 고래가 발생시키는 클릭음이나 휘슬음을 모방한다. 본 논문은 이러한 생체모방 은밀 수중음향통신의 발전 가능성과 향후 필요한 연구 분야를 파악하기 위해 생체모방 통신 기술들을 조사하고 이에 따른 연구 동향을 소개한다.

Keywords

Acknowledgement

본 연구는 국방과학연구소의 지원으로 수행되었음(UD200010DD).

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