Weak-extraction

代码说明：

  随机信号分析理论如何在实践中应用；随机信号的检测及分析方法；强噪声背景下微弱信号的提取又是信号检测的难点，其目的就是消除噪声，将有用的信号从强噪声背景中提取出来(How random signal analysis theory applied in practice random signal detection and analysis methods strong noise background of weak signal extraction and signal detection is difficult, its purpose is to eliminate the noise, the useful signal from strong background noise extracted)