function tiaoxing(bochang,N,m,L,handles) x<j($iv
global n 9fk\Ay1P
global point +=lcN~U2
k=2*pi/bochang; Ix l"'Q_z
a=m*1e+006; LP-KD
deltax=2*a/point;%取单位长度 uc{Qhw!;:
xx=-a:deltax:a; m/"=5*pA
L=L*1e+006; 'FvhzGn9Q
nn=length(xx); JhhT7\h(
u=ones(1,nn); Q{)F$]w
jj=1:nn; bl QzVp-
for n=1:N %进行迭代 m0q`A5!)
;#Bh_f
for b=1:nn 0V>N#P]
uu(b)=sqrt(i*exp(-i*k*L)/(bochang*L)).*... ^5iY/t~Q
sum(exp(-i*k*((b-jj)*deltax).^2./(2*L)).*u)*deltax;% Aghj) V
T[2f6[#[_
end -p]`(S%
-n$rKEC4
ma=max(uu);%归一化 gx{~5&1
uu=uu./ma; %.Q2r ?j
u=uu; >ehWjL`8
axes(handles.axes1); SwmPP-n
plot(xx,abs(u)) R<