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

• 来源期刊: 中国物理B（英文版）
• 关键词: stochastic resonance extracting weak signals signal-to-noise ratio (SNR) detection effect
• 年，卷（期）: 2018,（3）
• 页码范围: 260-266
• 页数: 7页
• 语种: 英文
• DOI: 10.1088/1674-1056/27/3/034203

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.