[ÇóÖú] ¶þάTM²¨£¬PML±ß½ç£¬matlab³ÌÐò¡£µ«ÊÇ·ÂÕæ½á¹ûÓÐÎÊÌ⣬Çó¸ßÊÖ½â¾ö

clc; clear; ft=1.5; fs=20; NX=100;%X·½ÏòÍø¸ñÊý NY=150;%Y·½ÏòÍø¸ñÊý NA=20;%ÎüÊÕ²ãºñ¶È bxrhx=1:100; bxirhx=2:150; byrhy=2:100; byirhy=1:150; bxrez=1:100; byrez=1:150; hx=zeros(100,151); hy=zeros(101,150); ezx=zeros(100,150); ezy=zeros(100,150); sigmamy=hx; sigmamx=hy; sigmax=ezx; sigmay=ezy; sigmamax=0.2; sigma=sigmamax*(NA:-1:1)/NA; sigmam=sigmamax*(2*NA-1:-2:1)/2/NA; sigmamx([1:NA,end:-1:end-NA+1],=repmat([sigmam,sigmam]',1,150); sigmax([1:NA,end:-1:end-NA+1],=repmat([sigma,sigma]',1,150); sigmamy(:,[1:NA,end:-1:end-NA+1])=repmat([sigmam,sigmam],100,1); sigmay(:,[1:NA,end:-1:end-NA+1])=repmat([sigma,sigma],100,1); f1hx=exp(-sigmamy(bxrhx,bxirhx)); f1hy=exp(-sigmamx(byrhy,byirhy)); f2hx=zeros(size(hx)); f2hy=zeros(size(hy)); f2hx(sigmamy == 0)=1/ft; f2hy(sigmamx==0)=1/ft; f2hx(sigmamy~=0)=(1-exp(-sigmamy(sigmamy~=0)))./sigmamy(sigmamy~=0)/ft; f2hy(sigmamx~=0)=(1-exp(-sigmamx(sigmamx~=0)))./sigmamx(sigmamx~=0)/ft; f2hx=f2hx(bxrhx,bxirhx); f2hy=f2hy(byrhy,byirhy); f1ezx=exp(-sigmax); f1ezy=exp(-sigmay); f2ezx=zeros(size(ezx)); f2ezy=zeros(size(ezy)); f2ezx(sigmax==0)=1/ft; f2ezy(sigmay==0)=1/ft; f2ezx(sigmax~=0)=(1-exp(-sigmax(sigmax~=0)))./sigmax(sigmax~=0)/ft; f2ezy(sigmay~=0)=(1-exp(-sigmay(sigmay~=0)))./sigmay(sigmay~=0)/ft; centerx=floor((1+NX)/2); centery=floor((1+NY)/2); for nn=1:150     ezx(centerx,centery)=ezx(centerx,centery)+sin(2*pi*nn/ft/fs);     ezy(centerx,centery)=ezy(centerx,centery)+sin(2*pi*nn/ft/fs); hx(bxrhx,bxirhx)=f1hx.*hx(bxrhx,bxirhx)-f2hx.*(ezx(bxrhx,bxirhx)-ezx(bxrhx,bxirhx-1)+ezy(bxrhx,bxirhx)-ezy(bxrhx,bxirhx-1)); hy(byrhy,byirhy)=f1hy.*hx(byrhy,byirhy)+f2hy.*(ezx(byrhy,byirhy)-ezx(byrhy-1,byirhy)+ezy(byrhy,byirhy)-ezy(byrhy-1,byirhy)); ezx=f1ezx.*ezx+f2ezx.*(hy(bxrez+1,-hy(bxrez,); ezy=f1ezy.*ezy-f2ezy.*(hx(:,byrez+1)-hx(:,byrez)); end ³ÌÐò¿ÉÒÔÔËÐС£µ«ÊÇ×Ô¼º»­³öµÄµÈλÏßͼ²»¶Ô£¬contour£¨ezx+ezy£©,contour(hx),contour(hy),¶¼²»¶Ô£¬Çó½â¾ö¡£

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