我的M文件如下： G5tday~3
function [G5]=fun(x); @S 6u9v
syms n1 n2 k1 k2 d; a9~"3y
[subwave,nsub]=textread('subout.txt','%f %f'); #~ Q8 M*~@
[filmwave,filmtran]=textread('filmtr.dat','%f %f'); A{<xc[w;p
[p,q]=size(subwave); E-1"+p
for j=1:p; &D#+6M&LK{
wavel(j)=subwave(j,1); ~@8+hnE ]
n(j)=n1+n2/((wavel(j))^2); ^t[HoFRa
k(j)=k1*exp(k2/wavel(j)); Q;nAPS
N(j)=n(j)-i*k(j); XtBMp=7Oa
phase(j)=2*pi*N(j)*d/wavel(j); |)W!jC&k
ns(j)=nsub(j,1); 2:$ k
B(j)=cos(phase(j))+ns(j)*i*sin(phase(j))/N(j); v&3O&y/1v
C(j)=i*N(j)*sin(phase(j))+ns(j)*cos(phase(j)); Q1>zg, r
T(j)=4*ns(j)/((B(j)+C(j))*conj(B(j)+C(j))); uv4 _:
ts(j)=1-((1-ns(j))/(1+ns(j)))^2; -cNx1et
t1(j)=ts(j)*T(j); U '[?9/T
tf(j)=filmtran(j,1)/100; ~_ !ts{[E
difference(j)=(t1(j)-tf(j))^2; .F 0]6#(
end w 7tC|^#G
G=symsum(difference(j),1,401); {@M14)-x>_
G1=subs(G,n1,sym('x(1)')); bdV3v`
G2=subs(G1,n2,sym('x(2)')); T{*^_
G3=subs(G2,k1,sym('x(3)')); i#,1 i VSG
G4=subs(G3,k2,sym('x(4)')); R9. HD?H@
G5=subs(G4,d,sym('x(5)')); ?gV'(3
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在matlab下运行 Kj*m r%IaU
>> options=optimset('tolfun',1e-8,'tolx',1e-8); I^fP k
>> [xmin,value,flag,output]=fminsearch(@fun,[1.7,4000,0.005,400,500],options); U($^E}I2(
$P?{O3:V
xQz #i-v
结果出错如下： }(=ml7 )v
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??? Conversion to double from sym is not possible. ez0 \bym
Error in ==> fminsearch at 175 Pi%tsKk%
fv(:,1) = funfcn(x,varargin{:}); WzG07 2w
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哪位高手给看看 q[bo WW
