정보와 통신 (Information and Communications Magazine)

한국통신학회 (The Korean Institute of Commucations and Information Sciences)
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해양환경 변동에 따른 수중음향 무선통신 채널 특성

  • 발행 : 2016.07.29
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⟨ 이전 논문 다음 논문 ⟩

초록

해양에서 음파를 사용하여 수중통신을 시도할 경우 해양매질은 음향 도파관(acoustic waveguide)의 역할을 하게 되고, 이 경우 해양환경의 변동성과 그에 따른 음파와 매질의 간섭에 의해 수중통신 채널의 변동성이 발생한다. 수중음향 채널은 대역 제한 채널이면서 잔향음 제한 채널이고 강한 도플러 변이 채널이므로 수신된 통신 신호는 육상통신에 비해 심한 인접 심볼간 간섭(intersymbol interference)과 위상변이를 가지게 된다. 따라서 수중통신을 시도함에 있어 이러한 해양환경 변동성과 그에 따른 수중음향 채널 변동에 대한 충분한 고려가 필요하다. 본 논문은 수중통신 시스템 구성에 도움을 줄 수 있도록 수중통신 채널에 영향을 미치는 해양 매질의 기본적 특성에 대해 소개하고 수중통신 채널과의 상관성 및 환경 변동성에 따른 통신채널의 변동성에 대해 소개하고자 한다.

키워드

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