Stochastic resonance subject to multiplicative and additive noise: The influence of potential asymmetries
作者： Zijian Qiao , Yaguo Lei , Jing Lin , Shantao Niu
DOI: 10.1103/PHYSREVE.94.052214
关键词: Multiplicative function 、 Intensity (physics) 、 Background noise 、 Weak signal 、 Statistical physics 、 Asymmetry 、 Stochastic resonance 、 Noise (electronics) 、 Noise intensity 、 Physics
摘要: The influence of potential asymmetries on stochastic resonance (SR) subject to both multiplicative and additive noise is studied by using two-state theory, where three types are introduced in double-well varying the depth, width, depth width left well alone. characteristics SR asymmetric cases different from symmetric ones, asymmetry has a strong output signal-to-noise ratio (SNR) optimal intensity. Even intensity also associated with steepness potential-barrier wall, which generally ignored. Moreover, largest SNR found be relatively larger than one, closely depends ratio. In addition, moderate cross-correlation between two noises good for improving SNR. More interestingly, double phenomenon observed certain correlated noises, whereas it disappears independent noises. above clues helpful achieving weak signal detection under heavy background noise.
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