Application of ray-based blind deconvolution to long-range acoustic communication in deep water

Donghyeon Kim; Heejin Park; J. S. Kim; Joo Young Hahn

doi:10.7776/ASK.2022.41.2.242

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2022 Vol.41, Issue 2 Preview Page

Research Article

Application of ray-based blind deconvolution to long-range acoustic communication in deep water 음선 기반 블라인드 디컨볼루션의 장거리 심해 환경으로의 적용

31 March 2022. pp. 242-253

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Abstract

When the source waveform is unknown, the Green’s function can be estimated by Ray-based Blind Deconvolution (RBD) based on the simple array signal processing. In previous papers, RBD was successfully demonstrated using simulation and experiments in shallow water environment. In this paper, we investigate the applicability of RBD for a long-range communication (e.g., 30 km, 60 km, and 90 km) in a deep water environment (1,000 m ~), using experimental data conducted in the east of Pohang, South Korea, in October 2018. Data results are presented to demonstrate Green’s function estimation of a communication signal (2.2 kHz ~ 2.9 kHz) using a 16-element, 42-m long vertical array. The results show that the Green’s function estimated from RBD is comparable to that of matched filter result. Additional communication performance at a maximum range of 90 km will be also presented.

Keywords

Long-range communication

Ray-based blind deconvolution

Green’s function

Deep water

송신 신호를 알지 못하는 경우에 대해 그린 함수는 간단한 배열 신호 처리 기반의 음선 기반 블라인드 디컨볼루션을 이용해 추정될 수 있다. 근거리 천해 환경에서의 음선 기반 블라인드 디컨볼루션은 선행 연구들에 의해 시뮬레이션 및 데이터를 기반으로 검증되었다. 본 논문에서는 30 km부터 90 km까지의 장거리 심해(1,000 m 이상의 깊이) 환경에서의 음선 기반 블라인드 디컨볼루션 기법의 가능성을 확인하였다. 이를 위해 2018년 포항 동방 해역에서 수행된 해상실험을 활용하였으며, 데이터 결과는 16개 수신기로 구성된 42 m 길이의 수직 선 배열 센서를 통해 수신된 통신 신호(2.2 kHz ~ 2.9 kHz) 의 그린 함수 추정을 입증하기 위해 도시하였다. 분석 결과로부터 정합 필터와 음선 기반 블라인드 디컨볼루션으로 추정한 그린 함수가 유사함을 확인하였다. 또한, 음선 기반 블라인드 디컨볼루션을 이용하여 최대 90 km 거리의 장거리 통신 신호의 성능 분석 결과를 제시하였다.

키워드

장거리 통신

음선 기반 블라인드 디컨볼루션

그린 함수

심해

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Information

Publisher :The Acoustical Society of Korea
Publisher(Ko) :한국음향학회
Journal Title :The Journal of the Acoustical Society of Korea
Journal Title(Ko) :한국음향학회지
Volume : 41
No :2
Pages :242-253
Received Date : 2021-12-31
Revised Date : 2022-02-14
Accepted Date : 2022-02-16
DOI :https://doi.org/10.7776/ASK.2022.41.2.242

The Journal of the Acoustical Society of Korea ISSN:1225-4428(Print) 2287-3775(Online) 한국음향학회지

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