The Journal of Korea Institute of Information, Electronics, and Communication Technology (한국정보전자통신기술학회논문지)

Korea Information Electronic Communication Technology (한국정보전자통신기술학회)
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Study on Underwater Optical-Acoustic Hybrid Communication Model

수중 광-음파 하이브리드 통신 모델 연구

  • Ye-Gwon Hong (Department of Radio Communication Engineering, Korea Maritime and Ocean University) ;
  • Hyun-Woo Jeong (Department of Radio Communication Engineering, Korea Maritime and Ocean University) ;
  • Jae-Hun Lee (Department of Radio Communication Engineering, Korea Maritime and Ocean University) ;
  • Ji-Won Jung (Department of Radio Communication Engineering, Korea Maritime and Ocean University)
  • 홍예권 ;
  • 정현우 ;
  • 이재훈 ;
  • 정지원
  • Received : 2024.10.10
  • Accepted : 2024.10.28
  • Published : 2024.10.29
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Abstract

In underwater communications, acoustic signals which have low transmission rate with long communication distance and optical signals which can achieve large-scale data transmission with short distance due to absorption and attenuation have been applied. This paper presents a hybrid optical-acoustic communication model that applies acoustic signals for long distance and optical signals for short distance. In order to apply hybrid model, available optical transmission distance considering ocean turbidity for reliable communication and distance estimation method using acoustic signals are presented. In simulation results, the reliable optical transmission distance in turbid ocean types is within 10m. To estimate distance for optical transmission using acoustic signals, four sensors are required to achieve stable estimation using TDoA method.

수중 통신에서는 장거리 전송이 가능하지만 전송률이 낮은 음파 통신과, 대용량 전송이 가능하나 흡수 및 산란 등으로 인해 전송 거리가 제한적인 광 통신이 적용되고 있다. 본 논문에서는 두 가지 통신 수단의 장점을 이용하여 장거리에서는 음파 통신, 단거리에서는 광 통신을 적용하는 하이브리드 모델을 제시하였으며, 하이브리드 모델을 적용하기 위해서는 해양에서의 탁도를 고려한 광 전송 가능 거리, 음파를 이용한 거리 추정 방식을 제시하였다. 해양에서의 탁도를 고려할 때 약 10m 이내의 거리에서 광 전송이 가능함을 알 수 있으며, TDoA 기법을 이용한 음원 거리 추정 알고리즘에서 센서가 4개일 때 안정적으로 추정함을 알 수 있다.

Keywords

Acknowledgement

Following are results of a study on the "Leaders in INdustry-university Cooperation 3.0" Project, supported by the Ministry of Education and National Research Foundation of Korea

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