我的M文件如下： ZX sm9
function [G5]=fun(x); Q|rrbx b
syms n1 n2 k1 k2 d; - \:pbR
[subwave,nsub]=textread('subout.txt','%f %f'); Y? = +A4 v
[filmwave,filmtran]=textread('filmtr.dat','%f %f'); FZ
DC?
[p,q]=size(subwave); ~vy_~|6s
for j=1:p; hR
Y *WL
wavel(j)=subwave(j,1); 3ybEQp9
n(j)=n1+n2/((wavel(j))^2); P PZxH}J.
k(j)=k1*exp(k2/wavel(j)); 4E}]>
N(j)=n(j)-i*k(j); B8NOPbT
phase(j)=2*pi*N(j)*d/wavel(j); yk5-@qo
ns(j)=nsub(j,1); iqig~fjK ~
B(j)=cos(phase(j))+ns(j)*i*sin(phase(j))/N(j); sa36 =:5x-
C(j)=i*N(j)*sin(phase(j))+ns(j)*cos(phase(j)); 0%7c?3 #
T(j)=4*ns(j)/((B(j)+C(j))*conj(B(j)+C(j))); E) |fKds
ts(j)=1-((1-ns(j))/(1+ns(j)))^2; RcitW;{|Kg
t1(j)=ts(j)*T(j); lwIU|T<4
tf(j)=filmtran(j,1)/100; ~T7\lJ{%G
difference(j)=(t1(j)-tf(j))^2; kep.+t[
end /[` bPKr
G=symsum(difference(j),1,401); {x4 0W0
G1=subs(G,n1,sym('x(1)')); x3xBl_t
G2=subs(G1,n2,sym('x(2)')); 5 5>^H1M
G3=subs(G2,k1,sym('x(3)')); Lj6$?( x}
G4=subs(G3,k2,sym('x(4)')); DJr{;t$7~
G5=subs(G4,d,sym('x(5)')); `So*\#\T
i=#<0! m
/PN[ g~3
T.H S.
在matlab下运行 ABvB1[s#
>> options=optimset('tolfun',1e-8,'tolx',1e-8); I:Wrwd
>> [xmin,value,flag,output]=fminsearch(@fun,[1.7,4000,0.005,400,500],options); J'`,];su
!>W _3Ea
Zmw'.hL
结果出错如下： ";AM3
n KC$
KC
??? Conversion to double from sym is not possible. D|}
y{~
Error in ==> fminsearch at 175 O+A/thI%*S
fv(:,1) = funfcn(x,varargin{:}); h1} x2
hVo]fD| W
哪位高手给看看 T},Nqt<
