我的M文件如下： oRn 5blj
function [G5]=fun(x); t5p#g < $
syms n1 n2 k1 k2 d; k/xNqN(
[subwave,nsub]=textread('subout.txt','%f %f'); _*(:6,8
[filmwave,filmtran]=textread('filmtr.dat','%f %f'); w68VOymD/
[p,q]=size(subwave); @0:mP
for j=1:p; 9/\=6v C|
wavel(j)=subwave(j,1); avv/mEf-f
n(j)=n1+n2/((wavel(j))^2); I8hmn@ ce
k(j)=k1*exp(k2/wavel(j));
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N(j)=n(j)-i*k(j); 7`X9s~B
phase(j)=2*pi*N(j)*d/wavel(j); I'cM\^/h
ns(j)=nsub(j,1); 8j %lM/ v
B(j)=cos(phase(j))+ns(j)*i*sin(phase(j))/N(j); k|^nrjStC
C(j)=i*N(j)*sin(phase(j))+ns(j)*cos(phase(j)); m+'X8}GC#O
T(j)=4*ns(j)/((B(j)+C(j))*conj(B(j)+C(j))); )3_g& &
ts(j)=1-((1-ns(j))/(1+ns(j)))^2; *!(? =9[
t1(j)=ts(j)*T(j); ;/nR[sibN
tf(j)=filmtran(j,1)/100; E?f*Z {~,
difference(j)=(t1(j)-tf(j))^2; @}N;C ..Y$
end ! FnH ;
G=symsum(difference(j),1,401); 3412znM&
G1=subs(G,n1,sym('x(1)')); \RP=Gf
G2=subs(G1,n2,sym('x(2)')); d7QQ5FiB
G3=subs(G2,k1,sym('x(3)')); mCpoaGV_
G4=subs(G3,k2,sym('x(4)')); Y6 @A@VJ
G5=subs(G4,d,sym('x(5)')); 4fzM%ku
DU4Prjb'
E~ !FEl;
8> jd 2'v{
在matlab下运行 se H#v
>> options=optimset('tolfun',1e-8,'tolx',1e-8); w4+bzdZ
>> [xmin,value,flag,output]=fminsearch(@fun,[1.7,4000,0.005,400,500],options); 6{I5 23g
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8L
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结果出错如下： dQFx] p3L
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??? Conversion to double from sym is not possible. cYTX)]^ u
Error in ==> fminsearch at 175 D9&FCCiUE
fv(:,1) = funfcn(x,varargin{:}); .es= w=
93y. u<,2;
哪位高手给看看 iyhB;s5Rgw
