Method of weak signals detection based on array of stochastic resonance

Based on the principle of Stochastic Resonance (SR), two models of weak signals detection - coupled array of stochastic resonance and uncoupled array of stochastic resonance are built. Through numerical simulation and computation, the influence of every parameter on system capability is analyzed. In addition, two models are compared with each other on signal-to-noise ratio gain. Simulation results show that the two models have better capability than the model of single SR oscillator, and uncoupled array is more effective than coupled array under a certain condition.