时频分析，一个频率为100的正弦信号做WVD时频分析,做出图后有两个频率(100Hz和400Hz)-Time-frequency analysis, a sinusoidal signal with a frequency of 100 do WVD time-frequency analysis, make a diagram after the two frequencies (100Hz and 400Hz)

此例程为配套书籍的第六章例题6-5的相对应代码，功能为计算非平稳随机信号的WVD时频谱，编程环境为matlab。-This routine matching books Chapter Example 6-5 corresponding to the code for the calculation of the non-stationary random signal WVD spectrum programming environment for matlab.

魏格纳时频分布，非平稳随机信号离散时间wvd仿真处理-Wigner time-frequency distribution, non-stationary random signal processing discrete-time simulation wvd