Numerical Investigation of Stochastic Resonance in Different Potential Systems

Abstract

Stochastic resonance is a fascinating phenomenon where the signal-to-noise ratio (SNR) of a noisy non-linear system is enhanced by the non-zero noise level. In this paper we numerically compare the performance of a correlation detection system with a system composed of a stochastic resonator (for SNR enhancement) followed by a correlation detector. The stocastic resonator is of either polynomial or double Gaussian type. The study is motivated by an interest in detecting the extremely weak radio signals frequently met in the 'radio imaging method' used for geophysical surveying.