Detection Line Spectrum of Ship Radiated Noise Based on a New 3D Chaotic System

This paper proposes a new detection model of a weak signal based on a third-order chaotic system. Using a dynamic analysis tool, such as the Lyapunov exponent and the bifurcation diagram, variations of dynamic behavior can be observed, and the weak signal underwater can be picked up. In order to imp...

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Bibliographic Details
Published in:Sensors (Basel, Switzerland) Switzerland), 2021-02, Vol.21 (5), p.1610
Main Authors: Hu, Gang, Wang, Kejun, Liu, Liangliang
Format: Article
Language:English
Subjects:
Algorithms
chaos system
circuit implementation
Communication
Dynamic characteristics
Liapunov exponents
SE and C0 complexity
Signal processing
Signal to noise ratio
Sound detecting and ranging
weak signals
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Summary:This paper proposes a new detection model of a weak signal based on a third-order chaotic system. Using a dynamic analysis tool, such as the Lyapunov exponent and the bifurcation diagram, variations of dynamic behavior can be observed, and the weak signal underwater can be picked up. In order to improve the observability of detection signals in the time domain and frequency domain, the spectral entropy complexity algorithm (SE) and complexity algorithms are used to analyze and extract the weak signal. The experimental results show that the spectrum extraction based on the complexity algorithm can accurately reflect the dynamic characteristics of the detected signal. It provides the theoretical direction and experimental data support for the application of the chaotic system in the field of acoustic detection.
ISSN:1424-8220
1424-8220
DOI:10.3390/s21051610