random_medium_random_深度优化_随机介质模型_随机介质_

clc; clear; x=1:10:2560; z=1:10:2560; %a=zeros(256,256); b=x'*x/200/200+z'*z/100/100; c=exp(-sqrt(b)); d=fft2(c,256,256); e=unifrnd(0,2*pi,256,256); %normplot(e); f=sqrt(d).*exp(-i*e); g=ifft2(f,256,256); h=real(g); k=mean2(h(:)); l=var(h(:)); m=0.05/sqrt(l)*(h-k); v=2000*(1+m); imagesc(v);