Noise directionality estimated using ship tracking data in the Southern Sea of Korea SCIE SCOPUS

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Title
Noise directionality estimated using ship tracking data in the Southern Sea of Korea
Author(s)
Park, Ji Sung; Kang, Donhyug; Cho, Sungho
KIOST Author(s)
Kang, Don Hyug(강돈혁)Cho, Sungho(조성호)
Publication Year
2018-07
Abstract
The noise directionality received by an array sensor depends on the spatiotemporal location and distribution of each noise source. Such noise directionality acts as a major factor in influencing the array gain, which determines the ability of the array sensor to detect an underwater target. Thus, the performance of the array sensor can be predicted by estimating the noise directionality. In this study, a modeling method was used to estimate the directionality of ship noise. To verify this method, the results were analyzed by comparing the noise directionality modeled using ship information received from an automatic identification system and the noise directionality measured with a horizontal line array. Although the modeled noise and measured noise directionalities were not perfectly matched, it was confirmed that the peak level and pattern shape of the directional noise pattern are similar. The factors that cause the difference between the two results are (1) the ship source level difference between the actual ship and the model, (2) the impact of ships not using the Automatic Identification System (AIS) as mandatory, and (3) the noise generated by wind, marine organisms, and fluid motion. If these factors are reflected in the noise directionality model using the ship information, better results will be obtained. (C) 2018 The Japan Society of Applied Physics
ISSN
0021-4922
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/871
DOI
10.7567/JJAP.57.07LG06
Bibliographic Citation
JAPANESE JOURNAL OF APPLIED PHYSICS, v.57, no.7, 2018
Publisher
IOP PUBLISHING LTD
Subject
RADIATED NOISE
Type
Article
Language
English
Document Type
Article; Proceedings Paper
Publisher
IOP PUBLISHING LTD
Related Researcher
Research Interests

Underwater Acoustic Modeling,Signal Processing,Underwater Target Detection,수중음향모델링,신호처리,수중표적탐지

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