Phenomenon of stochastic resonance caused by multiplicative asymmetric dichotomous noise.
Phenomenon of stochastic resonance caused by multiplicative asymmetric dichotomous noise.
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DOI：
10.1103/physreve.74.051115
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发表时间：
2006-11
期刊：
影响因子：
--
通讯作者：
Jing-hui Li;Y. Han
中科院分区：
文献类型：
--
作者：
Jing-hui Li;Y. Han
利用Shapiro-Loginov公式，计算了线性系统在周期外场和乘性非对称二分噪声作用下的一阶矩和信噪比的精确表达式.研究发现，输出信号的幅度和信噪比分别表现出两种随机共振现象：一种是作为非对称二分噪声参数的函数，如噪声强度D和描述二分噪声非对称程度的参数k;另一个是作为输入信号的参数（例如输入信号频率ω）的函数。
The exact expression of the first moment and the signal-to-noise ratio (SNR) have been calculated for a linear system subject to an external periodic field as well as a multiplicative asymmetric dichotomous noise, by using the Shapiro-Loginov formula. It has been found that the amplitude of the output signal, and the SNR, respectively, exhibit two kinds of the phenomena of stochastic resonance: one is as the functions of the parameters of the asymmetric dichotomous noise, such as the noise strength D, and the parameter k describing the asymmetric degree of the dichotomous noise; the other is as the function of the parameter of the input signal, such as the input signal frequency omega.