我的M文件如下： rK`* v*
function [G5]=fun(x); rfK%%-
syms n1 n2 k1 k2 d; Z3Vi il:
[subwave,nsub]=textread('subout.txt','%f %f'); .m4K ]^m
[filmwave,filmtran]=textread('filmtr.dat','%f %f'); 0BBWuNF.
[p,q]=size(subwave); _p90Zm-3X
for j=1:p; g#H#i~E^
wavel(j)=subwave(j,1); nGg>lRL
n(j)=n1+n2/((wavel(j))^2); pfZxG.l
k(j)=k1*exp(k2/wavel(j)); 3ldOOQW%
N(j)=n(j)-i*k(j); oS]XE!^M
phase(j)=2*pi*N(j)*d/wavel(j); gB&'MA!
ns(j)=nsub(j,1); iJ#sg+
B(j)=cos(phase(j))+ns(j)*i*sin(phase(j))/N(j); +nZx{d,wt
C(j)=i*N(j)*sin(phase(j))+ns(j)*cos(phase(j)); 2"2b\b}my
T(j)=4*ns(j)/((B(j)+C(j))*conj(B(j)+C(j))); CjD2FnjT
ts(j)=1-((1-ns(j))/(1+ns(j)))^2; 9GCxF`OB
t1(j)=ts(j)*T(j); UW40Y3W0
tf(j)=filmtran(j,1)/100; /#.6IV(
difference(j)=(t1(j)-tf(j))^2; ;Qw>&24h[
end 7kj#3(e
G=symsum(difference(j),1,401); ]ul]L
R%.
G1=subs(G,n1,sym('x(1)')); 3VcG
/rf
G2=subs(G1,n2,sym('x(2)')); obY5taOw
G3=subs(G2,k1,sym('x(3)')); sg2T)^*V
G4=subs(G3,k2,sym('x(4)')); {E>kFeg
G5=subs(G4,d,sym('x(5)')); "tm2YUG},s
8+lM6O ~!
L0Xb^vx}m
#knpZ'
在matlab下运行 5a_1x|Fhi
>> options=optimset('tolfun',1e-8,'tolx',1e-8); < r_ldkZ
>> [xmin,value,flag,output]=fminsearch(@fun,[1.7,4000,0.005,400,500],options); J6=*F;x6E
}oloMtp$
1?Wk qQ
结果出错如下： ~-|K5
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??? Conversion to double from sym is not possible. +Z /Pj_.o
Error in ==> fminsearch at 175 D/B b)]9I
fv(:,1) = funfcn(x,varargin{:}); >e'6RZRLA
]B\H
哪位高手给看看 qMKXS,s
