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- Title
Detection Line Spectrum of Ship Radiated Noise Based on a New 3D Chaotic System.
- Authors
Hu, Gang; Wang, Kejun; Liu, Liangliang; Prades, Raul Marin
- Abstract
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 C0 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.
- Subjects
UNDERWATER noise; LYAPUNOV exponents; BIFURCATION diagrams; SIGNAL detection; ACOUSTIC field; NOISE; STOCHASTIC resonance
- Publication
Sensors (14248220), 2021, Vol 21, Issue 5, p1610
- ISSN
1424-8220
- Publication type
Article
- DOI
10.3390/s21051610