Direction-of-Arrival Estimation for the Ring-Type Multimode Vector Hydrophone based on the Pressure Gradient-Acceleration Relationship

Wan-Jin Kim; Woo Shik Kim; Ho Seuk Bae; Cheeyoung Joh; Hee-Seon Seo; Sang Moon Choi

doi:10.7776/ASK.2015.34.1.066

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2015 Vol.34, Issue 1 Preview Page Next Page

Direction-of-Arrival Estimation for the Ring-Type Multimode Vector Hydrophone based on the Pressure Gradient-Acceleration Relationship 압력 구배-가속도 관계를 이용한링형 다중모드 벡터 하이드로폰에서의 도래각 추정

31 January 2015. pp. 66-74

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Abstract

Conventional hydrophones can only measure acoustic pressure. To measure both acoustic pressure and incident direction, various types of vector hydrophones have been researched. In this paper, we deal with a ring-type multimode vector hydrophone divided into 4 elements and present a direction-of-arrival (DoA) estimation method based on the pressure gradient-acceleration relationship. The performance of the presented method is analyzed by the simulation based on the sensor modeling and is verified by the water tank experiment. The proposed method could work under the multi-frequency condition and may be utilized in many applications due to its low computation complexity.

Keywords

Vector hydrophone

DoA estimation

Pressure gradient-acceleration relationship

수중에서 압력의 크기만을 측정할 수 있는 기존 하이드로폰의 한계를 극복하기 위해, 음압뿐만 아니라 음원의 방향을 측정할 수 있는 다양한 종류의 벡터 하이드로폰이 개발되고 있다. 본 논문에서는 다양한 종류의 벡터 하이드로폰 중 4개의 분할된 전극을 가지는 링형 다중모드 벡터 하이드로폰에서 압력 구배-가속도 관계를 이용하여 도래각을 추정할 수 있는 방법을 제안하였으며, 시뮬레이션과 수조 시험을 통해 제안된 도래각 추정 방법의 성능을 검증하였다. 제안된 방법은 다중 주파수 환경에서도 동작이 가능하며, 연산량이 작은 이점이 있으므로 관련 분야에서 다양하게 활용될 수 있을 것으로 기대된다.

키워드

벡터 하이드로폰

도래각 추정

압력 구배-가속도 관계

References

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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 : 34
No :1
Pages :66-74
Received Date : 2014-08-07
Revised Date : 2014-09-22
Accepted Date : 2014-10-21
DOI :https://doi.org/10.7776/ASK.2015.34.1.066

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

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