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N 的代码
spm_ar_demo_spec.m.svn-base
N=200;
fs=100;
t=[1:1:N]'/fs;
% Three sinusoids
f(1)=16;
f(2)=8;
f(3)=32;
x=zeros(N,1);
for i=1:3,
x=x+sin(2*pi*f(i)*t);
end
x=x+0.1*randn(N,1);
figure
plot(t,x);
xlabel('Secon
n.c
char_autoincr (b1, c)
short *b1;
short c;
{
*b1 = c;
}
n.c
char_autoincr (b1, c)
short *b1;
short c;
{
*b1 = c;
}
n-header-check.txt
************************************
The N-Rinex version: 2.10
The Ion Alpha: 1.583000e-008 1.490000e-008 -1.192000e-007 -1.192000e-007
The Ion Belta: 1.065000e+005 6.554000e+004
n-data-check.txt
*************第 1 个数据*****************
改正前：PRN-6 97 11 9 2 0 0.000000 -2.31988321079e-007 0.00000000000e+000 0.00000000000e+000
改正后：PRN-6 97 11 9 2 0 0.000000 -2.31988321079e-007 0.00000000000e+000 0
bianquan.m
N=13;
for i=1:N
for j=1:N
C(i,j)=inf;
end
end
for i=1:N
C(i,i)=0;
end
C(1,2)=6.0;C(1,13)=12.9;
C(2,3)=5.9;C(2,4)=10.3;
C(3,4)=12.2;C(3,5)=17.6;
C(4,13)=8.8;C(4,7)=7.4;
eg10_11.m
n=30;
f=[0 0.4 0.5 1];
a=[1 1 0 0];
b=firls(n,f,a);
[h,w]=freqz(b);
bb=remez(n,f,a);
[hh,w]=freqz(bb);
axes('position',[0.2 0.2 0.5 0.5]);
plot(w/pi,abs(h),'b-',w/pi,abs(hh),'r--');
xlabel('f
eg10_4.m
<mark>N</mark>=12;%序列长度
<mark>n</mark>=0:<mark>N</mark>-1;%时域取样
x<mark>n</mark>=cos(pi*<mark>n</mark>/6);%产生序列
k=0:<mark>N</mark>-1;%频域取样
w<mark>n</mark>=exp(-j*2*pi/<mark>N</mark>);
<mark>n</mark>k=<mark>n</mark>'*k;
w<mark>n</mark><mark>n</mark>k=w<mark>n</mark>.^<mark>n</mark>k;
xk=x<mark>n</mark>*w<mark>n</mark><mark>n</mark>k %计算DFT
figure(1)%画图
stem(<mark>n</mark>,x<mark> ...
eg10_4_2.m
<mark>N</mark>=12;%序列长度
<mark>n</mark>=0:<mark>N</mark>-1;
k=0:<mark>N</mark>-1;
w<mark>n</mark>=exp(-j*2*pi/<mark>N</mark>);
<mark>n</mark>k=<mark>n</mark>'*k;
w<mark>n</mark><mark>n</mark>k=w<mark>n</mark>.^(-<mark>n</mark>k);
x<mark>n</mark>=(xk*w<mark>n</mark><mark>n</mark>k)/<mark>N</mark>;%计算IDFT
figure(1)%画图
stem(k,abs(xk))
figure(2)
stem(<mark>n</mark>,real(x<mark>n</mark>))
...
bianquan.m
N=13;
for i=1:N
for j=1:N
C(i,j)=inf;
end
end
for i=1:N
C(i,i)=0;
end
C(1,2)=6.0;C(1,13)=12.9;
C(2,3)=5.9;C(2,4)=10.3;
C(3,4)=12.2;C(3,5)=17.6;
C(4,13)=8.8;C(4,7)=7.4;