clear;close all;clc;g=ones(1080,1080);[m,n]=size(g);Lx=1080*10*10^-6;Ly=1080*10*10^-6;lamda=6.32*10^(-7);k=2*pi/lamda;x0=linspace(-Lx/2,Lx/2,m);y0=linspace(-Ly/2,Ly/2,n);[x,y]=meshgrid(x0,y0);[theta,r]=cart2pol(x,y);T0=0.4*10^-3;n1=0.02;T=cos(2*pi*x./(T0+n1.*x));%以下代码为修改for i=1:1080 for j=1:1080 if T(i,j)>0 T(i,j)=1; else T(i,j)=0; end end endfigure;imshow(abs(T),[]);l=1;w=1.*10^-3;p=0;z=300.*10^-3;LG=lag_Gaussian(lamda,w,2,2,z,0.*theta,r);figure; imshow(abs(LG),[]); z0=z;N=1080;U0=LG;U1=abs(T);L0=1080*10*10^-6;n=1:N;x=-L0/2+L0/N*(n-1);y=x;[yy,xx]=meshgrid(y,x);Fresnel=exp(1i*k./2./z0*((xx).^2+(yy).^2));f2=U0.*U1*Fresnel;Uf=fft2(f2,N,N);Uf=fftshift(Uf);L=lamda*z0*N/L0;x=-L/2+L/N*(n-1);y=x;[yy,xx]=meshgrid(y,x);phase=exp(1i*k*z0)/(1i*lamda*z0)*exp(1i*k/2/z0*(xx.^2+yy.^2));Uf=Uf.*phase; g=L0/N;Uf=Uf*g*g;If=Uf;figure;imshow(abs(If),[]);求问此程序哪里有问题