Journal of Advanced Marine Engineering and Technology

The Korean Society of Marine Engineering (한국마린엔지니어링학회)
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A study on underwater multiple sensors acoustic communication for offshore plant monitoring

해양플랜트 제어 감시용 수중 다중 센서 음향 통신 기법 연구

  • Ahn, Tae-Seok (Department of Radio Communication Engineering, Korea Maritime and Ocean University) ;
  • Baek, Chang-Uk (Department of Radio Communication Engineering, Korea Maritime and Ocean University) ;
  • Jung, Ji-Won (Department of Radio Communication Engineering, Korea Maritime and Ocean University)
  • Received : 2016.09.02
  • Accepted : 2016.12.09
  • Published : 2017.01.31
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Abstract

In this paper, we analyzed underwater multiple sensors acoustic communication technologies for monitoring and control of offshore plants in underwater environments. Information on underwater structure of offshore plants is transmitted and received by multiple sensors at the same time. Using multiple sensors with same frequency, we employed spread spectrum techniques to avoid interferences between these multiple sensors. Owing to the multi-path characteristic in underwater communications, the performance is degraded. In order to improve the performance of underwater multiple sensors communication, we proposed turbo equalized RAKE receiver structures. Assuming that the number of sensors is fixed to three, we conformed the effectiveness of the proposed method as compared to the conventional one.

본 논문에서는 해양 플랜트 수중 구조물의 감시 제어를 위한 수중 다중 센서 음향통신 기법에 대해 분석한다. 각 구조물의 상태 정보는 구조물에 부착된 센서를 통해 정보가 수중으로 전송되며, 여러 구조물의 정보를 동시에 전송 및 수신하는 최적의 기법을 제시한다. 다중 센서를 통해 동일한 주파수를 이용하여 간섭 없이 성능 열화를 감소시키는 대역확산기법을 이용하여 수중 통신 송수신단 구성을 제시하며, 수중에서의 다중 경로로 인한 성능 열화를 감소시키기 위한 RAKE 기반의 수신모델을 제시한다. 본 논문에서는 센서의 갯수를 세 개로 제한하고 센서의 개수에 따른 성능을 시뮬레이션을 통해 제안한 방식의 효율성을 증명하였다.

Keywords

References

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