用VB编写的绘图程序，可以产生正弦信号、脉冲信号和随机信号等-VB drawings prepared by the procedure can produce sine signal pulse signal and random signals

通过对各种窗函数的matlab仿真，比较各种窗函数的频谱特性，并且将不同的窗函数加权到脉压信号上，观察特性的优劣-Based on all kinds of window function of matlab simulation, compare all kinds of window function, the characteristic of the frequency spectrum of and different window function weighting to the