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

被引：23

作者：

Li, Quan-Quan ^{[1
]}

Xu, Xue-Mei ^{[1
]}

Yin, Lin-Zi ^{[1
]}

Ding, Yi-Peng ^{[1
]}

Ding, Jia-Feng ^{[1
]}

Sun, Ke-Hui ^{[1
]}

机构：

[1] Cent S Univ, Sch Phys & Elect, Changsha 410083, Hunan, Peoples R China

来源：

CHINESE PHYSICS B | 2018年 / 27卷 / 03期

基金：

中国国家自然科学基金;

关键词：

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

D O I：

10.1088/1674-1056/27/3/034203

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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.

引用

页数：7

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