Detection Method of Weak Signal with Multi-stable Stochastic Resonance Under Color Noise

Authors

Zhang Gang, 1.Chongqing Key Laboratory of Signal and Information Processing, Chongqing University of Posts and Telecommunications, Chongqing 400065, China;;
Yi Tian, 1.Chongqing Key Laboratory of Signal and Information Processing, Chongqing University of Posts and Telecommunications, Chongqing 400065, China;;
Li’na He, 2. Chongqing College of Electronic Engineering, Chongqing 401331, China;

Abstract

Abstract: The color noise is combined with a multi-stable stochastic resonance system. The characteristics of stochastic resonance in multi-stable system are analyzed deeply under color noise which is more close to reality, and the signal-to-noise ratio gain is regarded as the measurement index. The self-adaptive method is used to study multi-stable stochastic resonance system parameters a, b, c and intensity amplification facto D on the resonant output. Based on the above analysis, different signals are detected. Multi-stable system is applied in rolling bearing fault diagnosis. Experimental results demonstrate that the parameters induced multi-stable system has significant detection effect on weak signals, and the SNR of single frequency signal can increase 12 dB in the case of SNR of -20 dB.

Recommended Citation

Gang, Zhang; Tian, Yi; and He, Li’na (2019) "Detection Method of Weak Signal with Multi-stable Stochastic Resonance Under Color Noise," Journal of System Simulation: Vol. 30: Iss. 9, Article 24.
DOI: 10.16182/j.issn1004731x.joss.201809024
Available at: https://dc-china-simulation.researchcommons.org/journal/vol30/iss9/24

First Page

3420

DOI Link

https://doi.org/10.16182/j.issn1004731x.joss.201809024

Last Page

3428

CLC

TP391

Recommended Citation

Zhang Gang, Yi Tian, He Li’na. Detection Method of Weak Signal with Multi-stable Stochastic Resonance Under Color Noise[J]. Journal of System Simulation, 2018, 30(9): 3420-3428.

DOI

10.16182/j.issn1004731x.joss.201809024