Стохастичний резонанс у цифровому фільтрі

Abstract

Stochastic resonance has been attracting the attention of both physicists and electronics specialists for the past two decades. This phenomenon occurs when the presence of both a useful signal (usually harmonic) and noise in a nonlinear system leads to an increase in the signal-to-noise ratio at the system output when the input noise level increases within certain limits. The paper considers stochastic resonance in a radio engineering system similar to a digital filter based on the Lyapunov characteristic function. The physical nature of the stochastic resonance is investigated and its existence in a radio engineering system is confirmed by modeling.