我的M文件如下： .Z QXY%g
function [G5]=fun(x); gDfM} 2]/
syms n1 n2 k1 k2 d; "[A&S!
[subwave,nsub]=textread('subout.txt','%f %f'); Q!~1Xc0S`p
[filmwave,filmtran]=textread('filmtr.dat','%f %f'); z}5'TV=^
[p,q]=size(subwave); \2@9k`
for j=1:p; 79Q,XRWh|
wavel(j)=subwave(j,1); S#+ _HFUK{
n(j)=n1+n2/((wavel(j))^2); !5m~qet.
k(j)=k1*exp(k2/wavel(j)); ]]V=\.y
N(j)=n(j)-i*k(j); FGwgSrXL7
phase(j)=2*pi*N(j)*d/wavel(j); z SsogAx
ns(j)=nsub(j,1); QQHC
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B(j)=cos(phase(j))+ns(j)*i*sin(phase(j))/N(j); H-5f!>)
C(j)=i*N(j)*sin(phase(j))+ns(j)*cos(phase(j)); OB,T>o@
T(j)=4*ns(j)/((B(j)+C(j))*conj(B(j)+C(j))); TKw>eGe
ts(j)=1-((1-ns(j))/(1+ns(j)))^2; ?aG ~ E
t1(j)=ts(j)*T(j); Vyx&M U.-J
tf(j)=filmtran(j,1)/100; 0\ $Lnwp_
difference(j)=(t1(j)-tf(j))^2; mn<ea&
end R<h0RKiM@
G=symsum(difference(j),1,401); 9D%~~~
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G1=subs(G,n1,sym('x(1)')); Eh_[8:dK
G2=subs(G1,n2,sym('x(2)')); q|D*H9[ke
G3=subs(G2,k1,sym('x(3)')); a~tBg y+9
G4=subs(G3,k2,sym('x(4)')); ~}~ yR*K%
G5=subs(G4,d,sym('x(5)')); f'X z4;
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在matlab下运行 oDA'}[/
>> options=optimset('tolfun',1e-8,'tolx',1e-8); A,ao2)
>> [xmin,value,flag,output]=fminsearch(@fun,[1.7,4000,0.005,400,500],options); }>j1j^c1='
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结果出错如下： M [T!AO-S$
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??? Conversion to double from sym is not possible. P#Ikj& l
Error in ==> fminsearch at 175 483vFL nF
fv(:,1) = funfcn(x,varargin{:}); LyXABQ]
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哪位高手给看看 `+@%l*TQ
