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Underwater Radiated Signal Analysis in the Modulation Spectrogram Domain

Authors
Cho, HyunjinLim, JunseokKu, BonhwaCheong, MyoungjunSeo, IksuKo, HanseokHong, Wooyoung
Issue Date
8월-2015
Publisher
IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG
Keywords
DEMON; modulation spectrogram; modulation frequency; tonal signal; underwater signal
Citation
IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES, v.E98A, no.8, pp.1751 - 1759
Indexed
SCIE
SCOPUS
Journal Title
IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES
Volume
E98A
Number
8
Start Page
1751
End Page
1759
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/92873
DOI
10.1587/transfun.E98.A.1751
ISSN
1745-1337
Abstract
Passive SONAR receives a mixed form of signal that is a combination of continuous and discrete line-component spectrum signals. The conventional algorithms, DEMON and LOFAR, respectively target each type of signal, but do not consider the other type of signal also present in the practical environment. Thus when features from two types of signals are presented at the same time, analysis results may cause confusion. In this paper, we propose an integrated analysis algorithm for underwater signals using the modulation spectrogram domain. The proposed domain presents the visual difference between the different types of signal, and therefore can prevent confusion that would otherwise be feasible. Moreover, the proposed algorithm is more efficient than multiband DEMON in terms of computation complexity, while in colored ambient noise environment, it has similar performance to conventional DEMON and LOFAR. We prove the validity of the proposed algorithm through the relevant experiments with synthesized signal and actual underwater recordings.
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