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Raspberry Pi 的代码
satpos.m
function satp = satpos(t,eph);
%SATPOS Calculation of X,Y,Z coordinates at time t
% for given ephemeris eph
%Kai Borre 04-09-96
%Copyright (c) by Kai Borre
%$Revision: 1.1 $ $Date: 1997/1
satpos.m
function satp = satpos(t,eph);
%SATPOS Calculation of X,Y,Z coordinates at time t
% for given ephemeris eph
%Kai Borre 04-09-96
%Copyright (c) by Kai Borre
%$Revision: 1.1 $ $Date: 1997/1
satpos.m
function satp = satpos(t,eph);
%SATPOS Calculation of X,Y,Z coordinates at time t
% for given ephemeris eph
%Kai Borre 04-09-96
%Copyright (c) by Kai Borre
%$Revision: 1.1 $ $Date: 1997/1
satpos.m
function satp = satpos(t,eph);
%SATPOS Calculation of X,Y,Z coordinates at time t
% for given ephemeris eph
%Kai Borre 04-09-96
%Copyright (c) by Kai Borre
%$Revision: 1.1 $ $Date: 1997/1
satpos.m
function satp = satpos(t,eph);
%SATPOS Calculation of X,Y,Z coordinates at time t
% for given ephemeris eph
%Kai Borre 04-09-96
%Copyright (c) by Kai Borre
%$Revision: 1.1 $ $Date: 1997/1
8.txt
wc=0.5*pi;
N=21;
Window=hamming(N);
hn=fir1(N-1,wc/pi,Window);
[H,W]=freqz(hn,1,512);
subplot(6,1,1);
plot(hn,'.');
grid
xlabel('n');
ylabel('hn');
subplot(6,1,2);
plot(W/pi,abs(H));
grid
9.txt
clear all
N=64;
wc=0.8*pi;
k=0:N-1;
phase=(-pi*k*(N-1)/N+pi/2);
HK=[zeros(1,26),ones(1,13),zeros(1,25)];
HK1=HK.*exp(j*phase);
hn=ifft(HK1,N);
[H,W]=freqz(hn,1,512);
subplot(3,1,1);
plot(abs
第七个.txt
第一题：
wp=0.2*pi;
ws=0.3*pi;
Rp=1;
Rs=10;
Fs=1;
Ts=1/Fs;
wp1=wp*Ts;
ws1=ws*Ts;
wp2=2*Fs*tan(wp1/2);
ws2=2*Fs*tan(ws1/2);
[N,Wn]=buttord(wp2,ws2,Rp,Rs,'s');
[Z,P,K]=buttap(N);
[Bap,Aap]=zp2t
p2_4.m
% Program P2_4.m
% Convolution Property of DTFT
close all;clear all;
w = -pi:2*pi/255:pi;
x1 = [1 3 5 7 9 11 13 15 17]; x2 = [1 -2 3 -2 1];
y = conv(x1,x2);
h1 = freqz(x1, 1, w); h2 = freqz(x2,
p2_5.m
% Program P2_5.m
% Modulation Property of DTFT
close all;clear all;
w = -pi:2*pi/255:pi;
x1 = [1 3 5 7 9 11 13 15 17];x2 = [1 -1 1 -1 1 -1 1 -1 1];
y = x1.*x2;
h1 = freqz(x1, 1, w);h2 = freqz(x2