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INHOMOGENEOUS FLUCTUATION DISTRIBUTION IN THE OUTPUT OF STOCHASTIC RESONANCE SYSTEMS AND ITS APPLICATION 下载免费PDF全文
Inputting a periodic signal mixed with white noise into a bistable system, we find that the fluctuation distribution in the time series of the output is strongly inhomogeneous. In certain phase part fluctuation is very low under the stochastic resonance condition, and consequently, the signal-to-noise ratio (SNR) there is much higher than that of the input. This mechanism can be used to design a nonlinear receiver to extract the signed from noise with SNR three times higher than the largest SNR obtained so far by the optimal linear filter. 相似文献
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Duffing系统随机共振现象的实验研究 总被引:2,自引:0,他引:2
用电子线路模拟的方法对Duffing系统进行随机共振(SR)实验研究,证实了Duffing系统中SR现象的存在,通过改变系统参数,输入信号和噪声强度等,从不同方面研究了SR的特性,将绝热近似理论与实验结果进行了比较。 相似文献