中文说明：基于随机共振的弱信号检测，借助朗之万方程，利用四阶龙格库塔方程来解方程，检测主要通过观察级联随机共振的输出功率谱，在输入正弦信号的频率出会出现峰值，即检测到了原始输入信号。
English Description：
Weak signal detection based on stochastic resonance, with the aid of the Langevin equation, the fourth-order Runge Kutta equation to solve the equation and detection mainly through observation of stochastic resonance in cascade output power spectrum and in the frequency of the sinusoidal input signal the peak will appear, that is, to detect the original input signal.