代码搜索：Raspberry Pi
找到约 10,000 项符合「Raspberry Pi」的源代码
代码结果 10,000
www.eeworm.com/read/186987/8886227
m p5_3.m
% Program P5_3
% Illustration of the Aliasing Effect
% in the Frequency-Domain
clf;
t = 0:0.005:10;
xa = 2*t.*exp(-t);
subplot(2,2,1)
plot(t,xa);grid
xlabel('Time, msec');ylabel('Amplitude');
title('
www.eeworm.com/read/186973/8887320
m c73.m
w0=120*pi;
theta=[60 80 87]*(pi/180);
for m=1:length(theta)
num=[1 0 w0^2];
den=[1 2*w0*cos(theta(m)) w0^2];
w=0:.5:1000; w=w';
[mag,phase,w]=bode(num,den,w);
plot(w,mag),hold on,axis([0 1000 0 1
www.eeworm.com/read/186973/8887336
m c83.m
t=-5*pi:pi/100:5*pi; t=t';
ft=cos(3*pi*t/7);
plot(t,ft,':'), hold on
k=-15:15; k=k';
fk=cos(k*3*pi/7);
stem(k,fk), hold off
www.eeworm.com/read/186973/8887364
m c126.m
Wp=0.15;Ws=0.1;Gp=-1;Gs=-6.3;T=pi/100;
% Digital Highpass Butterworth
%[n,Wn]=buttord(Wp,Ws,-Gp,-Gs);
%[b,a]=butter(n,Wn,'high')
% Digital Highpass Cheby1
%[n,Wn]=cheb1ord(Wp,Ws,-Gp,-Gs);
%[b,a]=c
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m c121.m
num=[1 0]; den=[1 -0.8];
W=-pi:pi/100:pi;
H=freqz(num,den,W);
mag=abs(H);
phase=180/pi*unwrap(angle(H));
subplot(2,1,1);
plot(W,mag);grid;
subplot(2,1,2);
plot(W,phase);grid
www.eeworm.com/read/186973/8887377
m c1211.m
clear;clg;
N=7;
H=[1 1 0 0 0 0 1];
for i=1:N
r=i-1;
Hr(i)=H(i)*exp(-j*r*pi*(N-1)/N);
end
k=0:6
hk=ifft(Hr);
subplot(2,1,1);
stem(k,hk);
xlabel('k');ylabel('h[k]');
M=512
hE=[hk zeros(1,M-7)]
HE
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m c122alt.m
a=0.83
num=[1 0 -1]; den=[1 -sqrt(2)*a a^2];
W=-pi:pi/100:pi;
H=freqz(num,den,W);
mag1=abs(H);
phase1=180/pi*unwrap(angle(H));
a=0.9
num=[1 0 -1]; den=[1 -sqrt(2)*a a^2];
H=freqz(num,den,W);
mag2=ab
www.eeworm.com/read/186973/8887392
m c127.m
% Wp=[1000 2000];Ws=[450 4000]. Divide by normalizing factor pi/T=10^4 to obtain
% normalized values Wp=[0.1 0.2] and Ws=[0.045 0.4]. Also Gp=-2.1;Gs=-20.
Wp=[0.1 0.2];Ws=[0.045 0.4];Gp=-2.1;Gs=-20
www.eeworm.com/read/384222/8888742
m freqz_m.m
function [db, mag, pha, grd, w]= freqz_m (b, a)
% db = [0 到 pi 弧度]区间内的相对振幅（db）
% mag = [0 到 pi 弧度]区间内的绝对振幅
% pha = [0 到 pi 弧度]区间内的相位响应
% grd = [0 到 pi 弧度]区间内的群延迟
% w = [0 到 pi 弧度]区间内的501个频率样本向量
www.eeworm.com/read/384060/8903433
m drawsatelliteorbit.m
function DrawSatelliteOrbit
%绘制卫星轨道
a=26560; %卫星椭圆轨道的长半轴
e=0.02; %椭圆的偏心率
E=[0:0.1:2*pi];
x=a*(cos(E)-e);
y=a*sqrt((1-e^2))*sin(E);
z=0*E;
DtoR=2*pi/360;
A1=[32.8 92.8 152.8 212