我的M文件如下： )~"0d;6_
function [G5]=fun(x); _tje xS'
syms n1 n2 k1 k2 d; x\:KfYr4Y;
[subwave,nsub]=textread('subout.txt','%f %f'); O<@L~S]
[filmwave,filmtran]=textread('filmtr.dat','%f %f'); -h
^ MX
[p,q]=size(subwave); C+`V?r p=s
for j=1:p; grkA2%N
wavel(j)=subwave(j,1); #bG6+"g{=L
n(j)=n1+n2/((wavel(j))^2); ?-9uf\2_
k(j)=k1*exp(k2/wavel(j)); c\ ZnGI\|
N(j)=n(j)-i*k(j); R/ E6n &R
phase(j)=2*pi*N(j)*d/wavel(j); d,
?GW
ns(j)=nsub(j,1); gzW{h0iRr
B(j)=cos(phase(j))+ns(j)*i*sin(phase(j))/N(j); lMg#zT !?
C(j)=i*N(j)*sin(phase(j))+ns(j)*cos(phase(j)); cud9oJ-=;
T(j)=4*ns(j)/((B(j)+C(j))*conj(B(j)+C(j))); >RJ&b
ts(j)=1-((1-ns(j))/(1+ns(j)))^2; DNqC*IvuzM
t1(j)=ts(j)*T(j); %WmTG }L)
tf(j)=filmtran(j,1)/100; p_JWklg^
difference(j)=(t1(j)-tf(j))^2; H;tE=
end BjTgZ98J
G=symsum(difference(j),1,401); JwWxM3(%t
G1=subs(G,n1,sym('x(1)')); [Ne'2z
G2=subs(G1,n2,sym('x(2)')); /S~ =qodS
G3=subs(G2,k1,sym('x(3)')); -lv(@7o~
G4=subs(G3,k2,sym('x(4)')); ~mK +Q%G5
G5=subs(G4,d,sym('x(5)')); i tk/1
L=HnVgBs
;qWSfCt/^
bNm]h.
在matlab下运行 SwO$UqYU=
>> options=optimset('tolfun',1e-8,'tolx',1e-8); BE~-0g$W
>> [xmin,value,flag,output]=fminsearch(@fun,[1.7,4000,0.005,400,500],options); @}{uibLD\
iG~&uEAJ
#QSSpsF@
结果出错如下： bt.3#aj
M ]O4
??? Conversion to double from sym is not possible. BYa#<jXtAT
Error in ==> fminsearch at 175 GM)q\Hx{
fv(:,1) = funfcn(x,varargin{:}); /PR 4ILed
UH\{:@GjNO
哪位高手给看看 WT1y7+_g(d
