Stochastic resonance in a bistable system with coloured correlation between additive and multiplicative noise
Stochastic resonance in a bistable system with coloured correlation between additive and multiplicative noise
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DOI：
10.1088/1009-1963/13/8/004
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发表时间：
2004-08
期刊：
影响因子：
--
通讯作者：
Xiao-Qin Luo;Shi-Qun Zhu
中科院分区：
文献类型：
--
作者：
Xiao-Qin Luo;Shi-Qun Zhu
研究了加性噪声和乘性噪声耦合的双稳态非线性系统中，当两个噪声项之间的相关性为有色时的随机共振现象。结果表明，系统的信噪比不仅受两个噪声项之间的耦合强度λ的影响，而且还受噪声相关时间τ的影响。信噪比由单峰变为双峰，然后随噪声强度单调递减。SR对初始条件的依赖完全是由两个噪声项之间的耦合强度λ造成的。
The phenomenon of stochastic resonance (SR) in a bistable nonlinear system with coupling between additive and multiplicative noises is investigated when the correlation between two noise terms is coloured. It is found that the signal-to-noise ratio (SNR) of the system is affected not only by the coupling strength λ between two noise terms, but also by the noise correlation time τ. The SNR is changed from a single peak, to two peaks with a dip and then to a monotonically decreasing function with noise strength. The dependence of the SR on the initial conditions is entirely caused by the coupling strength λ between two noise terms.