Performance enhancement of underwater acoustic source localization by nonlinear optimization of multiple parameters

In-Sik Yang; Taek-Ik Kwon; Tae-Woong Kang; Ki-Man Kim

doi:10.7776/ASK.2017.36.6.419

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2017 Vol.36, Issue 6 Preview Page Next Page

Performance enhancement of underwater acoustic source localization by nonlinear optimization of multiple parameters 다수 정보들의 비선형 최적화에 의한 수중 음원 위치 추정 성능 향상

30 November 2017. pp. 419-424

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Abstract

TDoA (Time Difference-of Arrival) or DoA (Direction-of-Arrival) can be used for source localization. However, the localizing performance is dependent on relative position between source and receivers, receivers’ geometric structure, sound speed, and so on. In this paper we propose a source localization method with enhanced performance that combines multiple information. The proposed method uses the time TDoA, DoA and sound speed as variables. LM (Levenberg-Marquardt) method which is one of nonlinear optimizations is applied. The performances of the proposed method was evaluated by simulation. As result of simulation, the proposed method has the lower average localizing error performance than the previous method.

Keywords

Source localization

TDoA (Time Difference-of Arrival)

DoA (Direction-of-Arrival)

Sound speed

LM (Levenberg-Marquardt) optimization

수중 음원의 위치를 추정하기 위해 도달 시간차와 도달 방향이 활용될 수 있다. 하지만 위치 추정 성능은 표적과 수신단 사이의 상대적인 위치, 수신기들의 기하학적인 배치 구조 및 음속 등에 영향을 받는다. 본 논문에서는 추정된 다수의 표적 정보들을 조합하여 위치 추정 성능을 향상시키는 방법을 제안하였다. 제안한 방법은 도달 시간차, 도달 방향 및 음속 값을 변수로 사용하며, 비선형 최적화 과정 가운데 하나인 LM(Levenberg-Marquardt) 방법이 적용되었다. 제안된 방법의 성능은 모의실험을 통해 분석되었다. 결과에서 제안된 방법의 평균 위치 추정 오차가 기존의 방법을 사용한 경우보다 낮게 나타났다.

키워드

위치 추정

도달 시간 차

도달 방향

음속

LM(Levenberg-Marquardt) 최적화

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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 : 36
No :6
Pages :419-424
Received Date : 2017-09-28
Revised Date : 2017-11-19
Accepted Date : 2017-11-29
DOI :https://doi.org/10.7776/ASK.2017.36.6.419

The Journal of the Acoustical Society of KoreaISSN:1225-4428(Print) 2287-3775(Online)한국음향학회

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