相关偏置信号调制噪声和加性噪声驱动线性系统随机共振

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振动与冲击 ›› 2011, Vol. 30 ›› Issue (11) : 171-174.

论文

相关偏置信号调制噪声和加性噪声驱动线性系统随机共振

周玉荣; 何正友

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Stochastic resonance in a linear system with correlated bias signal-modulated noise and additive noise

Zhou Yu-rong; He Zheng-you

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摘要

研究了偏置信号调制噪声和加性噪声驱动线性系统的随机共振现象。根据线性系统理论，得到了系统输出信噪比的精确表达式。研究结果表明：系统输出信噪比是系统衰减常数、调制信号偏置参数、信号调制噪声强度和加性噪声强度的非单调函数。同时，系统输出信噪比随两种噪声的相关强度成非单调关系。

Abstract

The phenomenon of stochastic resonance (SR) in a linear system subject to bias signal-modulated noise and additive noise is investigated. By the use of the linear system theory, we get the exact expression of the output signal-to-noise ratio (SNR). It is shown that the SNR is a non-monotonous function of the system attenuation parameter, of the signal bias, as well as of the intensities of the signal-modulated noise and the additive noise. In addition, the SNR behaves non-monotonically with the increase of the correlated strength between the two noises

导出引用

周玉荣;何正友. 相关偏置信号调制噪声和加性噪声驱动线性系统随机共振[J]. 振动与冲击, 2011, 30(11): 171-174

Zhou Yu-rong;He Zheng-you. Stochastic resonance in a linear system with correlated bias signal-modulated noise and additive noise[J]. Journal of Vibration and Shock, 2011, 30(11): 171-174