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Exploiting vibrational resonance in weak-signal detection
Yuhao Ren1, Yan Pan1, Fabing Duan1
1Institute of Complexity Science, Qingdao University, Qingdao 266071, People's Republic of China.
Abstract:
In this paper, we investigate the first exploitation of the vibrational resonance (VR) effect to detect weak signals in the presence of strong background noise. By injecting a series of sinusoidal interference signals of the same amplitude but with different frequencies into a generalized correlation detector, we show that the detection probability can be maximized at an appropriate interference amplitude. Based on a dual-Dirac probability density model, we compare the VR method with the stochastic resonance approach via adding dichotomous noise. The compared results indicate that the VR method can achieve a higher detection probability for a wider variety of noise distributions.
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