我的M文件如下： ]U?)_P@}
function [G5]=fun(x); G>"=Af(t?Y
syms n1 n2 k1 k2 d; ;n1< 1M>!
[subwave,nsub]=textread('subout.txt','%f %f'); *q** ,_?;
[filmwave,filmtran]=textread('filmtr.dat','%f %f'); QCjC|T9
[p,q]=size(subwave); ' e
@`HG
for j=1:p; 7:iTx;,v
wavel(j)=subwave(j,1); [l"|x75-
n(j)=n1+n2/((wavel(j))^2); ?5@!r>i=<
k(j)=k1*exp(k2/wavel(j)); %A_h!3f&
N(j)=n(j)-i*k(j); 5A^$!q P
phase(j)=2*pi*N(j)*d/wavel(j); YhQ;>Ko
ns(j)=nsub(j,1); 6_xPk`m
B(j)=cos(phase(j))+ns(j)*i*sin(phase(j))/N(j); a ;@G
C(j)=i*N(j)*sin(phase(j))+ns(j)*cos(phase(j)); + +{,1wY\
T(j)=4*ns(j)/((B(j)+C(j))*conj(B(j)+C(j))); )> >Tj7
ts(j)=1-((1-ns(j))/(1+ns(j)))^2; B'sgCU
t1(j)=ts(j)*T(j); #Xdj:T<*
tf(j)=filmtran(j,1)/100; 4I&e_b< 30
difference(j)=(t1(j)-tf(j))^2; nKxu8YAJe
end D3, 9X#B=
G=symsum(difference(j),1,401); &USKudXmb
G1=subs(G,n1,sym('x(1)')); ]nmVT~lBe"
G2=subs(G1,n2,sym('x(2)')); vxN,oa {hf
G3=subs(G2,k1,sym('x(3)')); vSyR%
j
G4=subs(G3,k2,sym('x(4)')); B+)HDIPa-
G5=subs(G4,d,sym('x(5)')); 2GRL`.1
b{X ,0a{*
W#^W1j>_G
{|:ro!&
在matlab下运行 V R:4|_o
>> options=optimset('tolfun',1e-8,'tolx',1e-8); X1LwIa>
>> [xmin,value,flag,output]=fminsearch(@fun,[1.7,4000,0.005,400,500],options); cviPCjM
G%Dhj)2}
]!%
p21e
结果出错如下： QY)hMo=|o8
_'O XrT#Q
??? Conversion to double from sym is not possible. e#{,M8
Error in ==> fminsearch at 175 l:Hm|9UZ
fv(:,1) = funfcn(x,varargin{:}); "CH3\O\
Ng =_#<
哪位高手给看看 ,\".|m1o.
