首先编程生成长度为600的一个稳定信号，在此基础上再编程混叠一个标准偏差为15的高斯白噪声，得到一个含噪信号，最后用中值滤波器去噪，画出去噪效果图。-First, the length of 600 programmed to generate a stable signal, on this basis, re-programming aliasing a standard deviation of 15 Gaussian white noise, get a noisy signal, and finally with the median filter denoising, draw denoising effect diagram.