中国物理B ›› 2010, Vol. 19 ›› Issue (8): 80504-080504.doi: 10.1088/1674-1056/19/8/080504
周玉荣1, 郭锋2, 罗向东2, 李少甫2
Guo Feng(郭锋)a)†, Luo Xiang-Dong(罗向东)a), Li Shao-Fu(李少甫)a), and Zhou Yu-Rong(周玉荣)b)
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.
中图分类号: (Circuit theory)