我的M文件如下： q4$R?q:^
function [G5]=fun(x); zjh&?G]:G
syms n1 n2 k1 k2 d; 5FHpJlFK,
[subwave,nsub]=textread('subout.txt','%f %f'); _[V.%k
[filmwave,filmtran]=textread('filmtr.dat','%f %f'); 0>-l {4srs
[p,q]=size(subwave); _tQ= ASe0
for j=1:p; Nh41o0
wavel(j)=subwave(j,1); Kbc-$ oneR
n(j)=n1+n2/((wavel(j))^2); Q=yQEh|Y
k(j)=k1*exp(k2/wavel(j)); jo ifIp_
N(j)=n(j)-i*k(j); piO+K!C0n:
phase(j)=2*pi*N(j)*d/wavel(j); Y }"|J ~
ns(j)=nsub(j,1); ?T5^hQT
B(j)=cos(phase(j))+ns(j)*i*sin(phase(j))/N(j); \1RQ),5 %]
C(j)=i*N(j)*sin(phase(j))+ns(j)*cos(phase(j)); .9 WUp >
T(j)=4*ns(j)/((B(j)+C(j))*conj(B(j)+C(j))); 4j)Y>
ts(j)=1-((1-ns(j))/(1+ns(j)))^2; 4 i[3|hv'
t1(j)=ts(j)*T(j); "HVwm>qEi
tf(j)=filmtran(j,1)/100; h^$>{0"
difference(j)=(t1(j)-tf(j))^2; amGQ!$]
%#
end T}P| uP
G=symsum(difference(j),1,401); E8>npDF v.
G1=subs(G,n1,sym('x(1)')); C^r 3r 6
G2=subs(G1,n2,sym('x(2)')); #l-,2C~
G3=subs(G2,k1,sym('x(3)')); E]_lYYkA
G4=subs(G3,k2,sym('x(4)')); lw? f2_fi
G5=subs(G4,d,sym('x(5)')); ]k{cPK
mn" a$
p7 !q#o
l~&efAJ-$
在matlab下运行 `S<uh9/
>> options=optimset('tolfun',1e-8,'tolx',1e-8); ~SZ0Yu:X
>> [xmin,value,flag,output]=fminsearch(@fun,[1.7,4000,0.005,400,500],options); '[5tc fG#z
iTbmD
RgQ\Cs24Q
结果出错如下： 2=!/)hw}
R]/F{Xs
??? Conversion to double from sym is not possible. >Q+a'bd w
Error in ==> fminsearch at 175 Q%QpG)E
fv(:,1) = funfcn(x,varargin{:}); )TyL3Z\>(
lyZof_/*
哪位高手给看看 `X^ 4~ 6/q
