轉(zhuǎn)載一個實現(xiàn)分?jǐn)?shù)傅立葉變換的matlab程序，作者信息在程序中有。
3-1a+7fD |B'4w F> function FF=frft_PXJ(N,alpha);
&"27U %matrix
3u+i % FF is the kernel matrix of fractional Fourier transform
kd]CV7(7 % \copyright: zjliu
+ 660/ e8N % Author's email:
zjliu2001@163.com S;D]y m Ts=sqrt(2*pi/N); t=-(N-1)/2:(N-1)/2; t=t'; t=t*Ts;
XJy.xI>; variance=N/2/pi; HH=zeros(N); HH(:,1)=1; HH(:,2)=2*t;
o61rTj for k=3:N;
>El]5M7h7
