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Chin. Phys. B, 2018, Vol. 27(3): 034203    DOI: 10.1088/1674-1056/27/3/034203
ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS Prev   Next  

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

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)
School of Physics and Electronics, Central South University, Changsha 410083, China
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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