Stochastic resonance in a monostable system driven by square-wave signal and dichotomous noise  

作　　者：郭锋 罗向东 李少甫 周玉荣 

机构地区：[1]School of Information Engineering,Southwest University of Science and Technology [2]School of Information and Electric Engineering,Panzhihua University

出　　处：《Chinese Physics B》2010年第8期156-162,共7页中国物理B（英文版）

基　　金：Project supported by the Doctorial Foundation of Southwest University of Science and Technology of China(Grant No.08zx7108)

摘　　要：This paper investigates the stochastic resonance in a monostable system driven by square-wave signal, asymmetric dichotomous noise as well as by multiplicative and additive white noise. By the use of the properties of the dichotomous noise, it obtains the expressions of the signal-to-noise ratio under the adiabatic approximation condition. It finds that the signal-to-noise ratio is a non-monotonic function of the asymmetry of the dichotomous noise, and which varies non- monotonously with the intensity of the multiplicative and additive noise as well as the system parameters. Moreover, the signal-to-noise ratio depends on the correlation rate and intensity of the dichotomous noise.This paper investigates the stochastic resonance in a monostable system driven by square-wave signal, asymmetric dichotomous noise as well as by multiplicative and additive white noise. By the use of the properties of the dichotomous noise, it obtains the expressions of the signal-to-noise ratio under the adiabatic approximation condition. It finds that the signal-to-noise ratio is a non-monotonic function of the asymmetry of the dichotomous noise, and which varies non- monotonously with the intensity of the multiplicative and additive noise as well as the system parameters. Moreover, the signal-to-noise ratio depends on the correlation rate and intensity of the dichotomous noise.

关 键 词：stochastic resonance monostable system asymmetric dichotomous noise 

分 类 号：N93[自然科学总论]