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研究了偏置信号调制下关联分段噪声驱动的过阻尼线性系统的随机共振现象,推导出了一阶矩、二阶矩和信噪比的解析表达式.通过对信噪比曲线的分析,发现该系统中存在三种不同形式的随机共振:传统的随机共振、真正的随机共振和广义的随机共振.此外,数值结果还表明,加性噪声能够减弱输出的信噪比,而噪声之间的互相关强度能够使输出的信噪比增强.
The stochastic resonance phenomenon of over-damped linear system driven by correlated segment noise under bias signal modulation is studied and the analytic expression of first moment, second moment and signal-to-noise ratio is deduced.Through the analysis of SNR curve, It is found that there are three different types of stochastic resonance in the system: traditional stochastic resonance, true stochastic resonance and generalized stochastic resonance.In addition, the numerical results also show that additive noise can reduce the output signal to noise ratio The cross-correlation strength of the output can enhance the signal-to-noise ratio.