中文说明：
和大家分享一个全相位FFT，matlab程序，程序中全相位fft实现方法有两种，注释掉的根据原理推到得来，自己看吧。
English Description：
Share with you a whole phase FFT, the matlab program, all phase in the program there are two kinds of FFT method, comment out according to the principle of push to come, see by yourself.