Target motion analysis algorithm using an acoustic propagation model in the ocean environment of South Korea

Ki Hoon Seo

doi:10.7776/ASK.2019.38.4.387

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2019 Vol.38, Issue 4 Preview Page Next Page

Research Article

Target motion analysis algorithm using an acoustic propagation model in the ocean environment of South Korea 한국 해양환경에서 음파전달모델을 이용한 표적기동분석 알고리즘

31 July 2019. pp. 387-395

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Abstract

TMA (Target Motion Analysis) in passive sonar is generally conducted with the bearing only or the bearing frequency. In order to conduct TMA fast and accurately, it is essential to estimate a initial target maneuver precisely. The accuracy of TMA can be improved by using SNR (Signal to Noise Ratio) information and acoustic propagation model additionally. This method assumes that the radiated noise level of the target is known, but the accuracy of TMA can be degraded due to a mismatch between the assumed radiated noise level and the actual radiated noise level. In this paper, TMA with the acoustic propagation model, bearing measurements, and SNR information is conducted in the ocean environment of South Korea (East Sea/ Yellow Sea/ South Sea). And the performance analysis of TMA for the mismatch in the radiated noise is presented.

Keywords

Target motion analysis

Acoustic propagation model

SNR (Signal to Noise Ratio)

Ocean environment of South Korea

East Sea

Yellow Sea

South Sea

수동소나에서의 표적기동분석은 방위 또는 방위-주파수와 같이 제한된 정보를 이용하여 수행된다. 표적기동분석을 빠르고 정확하게 수행하기 위해서는 정확한 표적기동 초기치의 추정이 필수적이다. 기존의 표적기동분석과 달리 신호 대 잡음비 정보와 음파전달모델을 추가로 이용하면 표적기동분석의 정확도를 향상시킬 수 있다. 이 방법은 표적의 방사소음수준은 알고 있다고 가정하지만 가정한 수준과 실제 수준간의 오차에 따라 표적기동분석의 정확도가 저하될 수 있다. 본 논문에서는 수동 소나로 탐지한 표적 방위정보, 탐지 신호 대 잡음비 정보 및 음파전달모델을 이용한 표적기동분석 알고리즘을 한국 해양환경(동해/서해/남해)에서 수행한다. 그리고 가정한 표적 방사소음수준과 실제 수준간의 차이에 따른 성능분석 결과를 제시한다.

키워드

표적기동분석

음파전달모델

신호 대 잡음비

한국 해양환경

동해

서해

남해

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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 : 38
No :4
Pages :387-395
Received Date : 2019-02-27
Revised Date : 2019-05-03
Accepted Date : 2019-06-17
DOI :https://doi.org/10.7776/ASK.2019.38.4.387

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

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