svd_sdata.m

svd分析的例子

%生成数据矩阵子程序 sdata.m 
points=14; 
times=points*10-1; 
stepa=1.5/200; 
stepb=4/200; 
a1=1.5:stepa:3-stepa; 
b1=4:stepb:8-stepb; 
t1=0:10:times; 
f1=inline('a*sin(2*pi*t/140)','a','t'); 
%f2=inline('b*exp(-t/100)','b','t'); 
f2=inline('b*t.^2','b','t'); 
 
noise1=normrnd(0,0.5,200,points); 
noise=normrnd(0,0.5,1600,points); 
 
for i=1:200 
ys(i,:)=f1(a1(i),t1); 
ye(i,:)=f2(b1(i),t1); 
end 
ys=ys+noise1; 
ye=ye+noise1; 
 
data=[ys;ye;noise]; 
 
clear i f1 f2 t1 stepa stepb noise1 noise ys ye a1 b1