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2018 Vol.37, Issue 4 Preview Page

Research Article

Ray backpropagation-based ship localization

음선 역전파 기반의 선박 위치 추정

Seong-il Cho1
,
Gihoon Byun2
,
Sung-Hoon Byun3
,
J. S. Kim1∗
조 성일1
,
변 기훈2
,
변 성훈3
,
김 재수1∗
1한국해양대학교 해양공학과
2Scripps Institution of Oceanography
3한국해양과학기술원 부설 선박해양플랜트연구소
∗Corresponding Author
31 July 2018. pp. 196-205
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Abstract

This paper presents an algorithm for passive localization of a ship by applying the ray back-propagation technique to the ship radiation noise data. The previous method [S. H. Abadi, D. Rouseff and D. R. Dowling, J. Acoust. Soc. Am. 131, 2599-2610 (2012)] estimates the position of a sound source in the near-field environment with no array tilt by using the RBD (Ray-based Blind Deconvolution) and ray back-propagation techniques. However, when there exists an array tilt, the above method leads to a large position estimation error. In order to overcome the problem, this study proposes an algorithm that estimates the position of a sound source by correcting the array tilt using the RBD and ray back-propagation techniques. The proposed algorithm was verified by using the ship noise of SAVEX15 (Shallow-water Acoustic Variability EXperiment in 2015) experimental data.

Keywords
Ray-backpropagation
Ray-based blind deconvolution
Channel impulse response
Source localization

본 논문은 선박소음 데이터에 음선 역전파 기법을 적용하여 수동 선박 위치 추정 알고리듬을 제시한다. 기존의 방법 [S. H. Abadi, D. Rouseff and D. R. Dowling, J. Acoust. Soc. Am. 131, 2599-2610 (2012)]은 음선 기반 블라인드 디컨벌루션 및 음선 역전파 기법을 활용하여 배열의 기울기가 없는 근거리 환경에서 음원의 위치를 추정하였다. 하지만 위 방법은 배열의 기울기에 따른 위치 추정 오차가 크게 발생한다는 단점이 존재한다. 이를 극복하기 위해 본 논문에서는 음선 기반 블라인드 디컨벌루션 및 음선 역전파 기법을 사용하되, 배열의 기울기를 보정하여 음원의 위치를 추정할 수 있는 알고리듬을 제안한다. 제안된 알고리듬의 성능은 SAVEX15(Shallow-water Acoustic Variability EXperiment in 2015)해상 실험의 선박소음 데이터를 이용하여 검증하였다.

키워드
음선 역전파
음선 기반 블라인드 디컨벌루션
채널 임펄스 응답
음원 위치 추정
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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 : 37
  • No :4
  • Pages :196-205
  • Received Date : 2018-05-02
  • Revised Date : 2018-06-12
  • Accepted Date : 2018-07-27
  • DOI :https://doi.org/10.7776/ASK.2018.37.4.196
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