Implication of two-coupled tri-stable stochastic resonance in weak signal detection

doi:10.1088/1674-1056/27/3/034203

Abstract Stochastic resonance (SR) has been proved to be an effective approach to extract weak signals overwhelmed in noise. However, the detection effect of current SR models is still unsatisfactory. Here, a coupled tri-stable stochastic resonance (CTSSR) model is proposed to further increase the output signal-to-noise ratio (SNR) and improve the detection effect of SR. The effects of parameters a, b, c, and r in the proposed resonance system on the SNR are studied, by which we determine a set of parameters that is relatively optimal to implement a comparison with other classical SR models. Numerical experiment results indicate that this proposed model performs better in weak signal detection applications than the classical ones with merits of higher output SNR and better anti-noise capability.

Keywords: stochastic resonance extracting weak signals signal-to-noise ratio (SNR) detection effect

Received: 07 July 2017
Revised: 03 November 2017
Accepted manuscript online:

PACS:	42.30.Rx	(Phase retrieval)
	42.55.Px	(Semiconductor lasers; laser diodes)
	42.79.-e	(Optical elements, devices, and systems)
	42.87.-d	(Optical testing techniques)

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 61071025 and 61502538).

Corresponding Authors: Xue-Mei Xu
E-mail: xuxuemei999@126.com

Cite this article:

Quan-Quan Li(李泉泉), Xue-Mei Xu(许雪梅), Lin-Zi Yin(尹林子), Yi-Peng Ding(丁一鹏), Jia-Feng Ding(丁家峰), Ke-Hui Sun(孙克辉) Implication of two-coupled tri-stable stochastic resonance in weak signal detection 2018 Chin. Phys. B 27 034203

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Implication of two-coupled tri-stable stochastic resonance in weak signal detection

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