Adaptive passive fathometer processing using ambient noise received by vertical nested array SCIE SCOPUS

Cited 2 time in WEB OF SCIENCE Cited 2 time in Scopus
Title
Adaptive passive fathometer processing using ambient noise received by vertical nested array
Author(s)
Kim, Junghun; Cho, Sungho; Choi, Jee Woong
KIOST Author(s)
Cho, Sungho(조성호)
Publication Year
2015-07
Abstract
A passive fathometer technique utilizes surface-generated ambient noise received by a vertical line array as a sound source to estimate the depths of water-sediment interface and sub-bottom layers. Ambient noise was measured using a 24-channel, vertical nested line array consisting of four sub-arrays, in shallow water off the eastern coast of Korea. In this paper, nested array processing is applied to passive fathometer technique to improve the performance. Passive fathometer processing is performed for each sub-array, and the results are then combined to form a passive fathometer output for broadband ambient noise. Three types of beamforming technique, including conventional and two adaptive methods, are used in passive fathometer processing. The results are compared to the depths of water-sediment interface measured by an echo sounder. As a result, it is found that the adaptive methods have better performance than the conventional method. (C) 2015 The Japan Society of Applied Physics
ISSN
0021-4922
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/2449
DOI
10.7567/JJAP.54.07HG04
Bibliographic Citation
JAPANESE JOURNAL OF APPLIED PHYSICS, v.54, no.7, 2015
Publisher
IOP PUBLISHING LTD
Subject
GEOACOUSTIC INVERSION; OCEAN
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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