JZUS - Journal of Zhejiang University SCIENCE

Frontiers of Information Technology & Electronic Engineering

Accepted manuscript available online (unedited version)

Recognition method for underwater communication signals that mimic dolphin whistles using phase-shifting modulation

Author(s): Qingwang YAO¹, Jiajia JIANG^†^‡¹, Xiaolong YU², Zhuochen LI¹, Xiaozong HOU¹, Xiao FU¹, Fajie DUAN¹
Affiliation(s): ¹State Key Lab of Precision Measuring Technology and Instruments, Tianjin University, Tianjin, China; more
Corresponding email(s): jiajiajiang@tju.edu.cn
Key Words: Underwater acoustic signals recognition; Bionic camouflage covert communication; Time-frequency contour masking filtering; Convolutional neural network

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Qingwang YAO¹, Jiajia JIANG^†^‡¹, Xiaolong YU², Zhuochen LI¹, Xiaozong HOU¹, Xiao FU¹, Fajie DUAN¹. Recognition method for underwater communication signals that mimic dolphin whistles using phase-shifting modulation[J]. Frontiers of Information Technology & Electronic Engineering,in press.https://doi.org/10.1631/FITEE.2400572

@article{title="Recognition method for underwater communication signals that mimic dolphin whistles using phase-shifting modulation",
author="Qingwang YAO¹, Jiajia JIANG^†^‡¹, Xiaolong YU², Zhuochen LI¹, Xiaozong HOU¹, Xiao FU¹, Fajie DUAN¹",
journal="Frontiers of Information Technology & Electronic Engineering",
year="in press",
publisher="Zhejiang University Press & Springer",
doi="https://doi.org/10.1631/FITEE.2400572"
}

%0 Journal Article
%T Recognition method for underwater communication signals that mimic dolphin whistles using phase-shifting modulation
%A Qingwang YAO¹
%A Jiajia JIANG^†^‡¹
%A Xiaolong YU²
%A Zhuochen LI¹
%A Xiaozong HOU¹
%A Xiao FU¹
%A Fajie DUAN¹
%J Frontiers of Information Technology & Electronic Engineering
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%@ 2095-9184
%D in press
%I Zhejiang University Press & Springer
doi="https://doi.org/10.1631/FITEE.2400572"

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T1 - Recognition method for underwater communication signals that mimic dolphin whistles using phase-shifting modulation
A1 - Qingwang YAO¹
A1 - Jiajia JIANG^†^‡¹
A1 - Xiaolong YU²
A1 - Zhuochen LI¹
A1 - Xiaozong HOU¹
A1 - Xiao FU¹
A1 - Fajie DUAN¹
J0 - Frontiers of Information Technology & Electronic Engineering
SP -
EP -
%@ 2095-9184
Y1 - in press
PB - Zhejiang University Press & Springer
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doi="https://doi.org/10.1631/FITEE.2400572"

Abstract
Chinese Summary
Academic Network
Reviewer Comment

Abstract: With the introduction of underwater bionic camouflage covert communication, conventional communication signal recognition methods can no longer meet the needs of current underwater military confrontations. However, the research on bionic communication signal recognition is still not comprehensive. This paper takes underwater communication signals that mimic dolphin whistles through phase-shifting modulation as the research object and proposes a recognition method based on a convolutional neural network. A time-frequency contour masking filtering method is designed, which uses image technology to obtain the time-frequency contour mask of whistles and extracts whistles from the obtained mask. Spatial diversity combining is used to suppress the signal fading in multipath channels. The phase derivative spectrum image is obtained by Hilbert transform and continuous wavelet transform and is then used as the basis for recognition. Finally, the effectiveness of the proposed method is verified by simulation and lake experiments. In the simulation experiments, a recognition accuracy of 90% is achieved at an SNR of 0 dB in multipath channels, and in the real underwater communication environment, a recognition accuracy of 80% is achieved at a symbol width of 50 ms and an SNR of 6.36 dB.

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