-
example4_3
例3:分析占空比为ta的矩形脉冲频谱
T=1 时间窗大小
ta=0.5 占空比
N=256
t=linspace(-T,T,N)
ts=2*T/N
fs=1/ts
(x=zeros(1,N)
x(N/2-round(N/2*ta):N/2+round(N/2*ta))=ones(1,2*round(N/2*ta)+1)
y=fft(x,N)
figure
plot(t,x)
title([ 时域信号图 占空比为 ,num2str(ta)])
axis([-T T-0.2 1.2])
xlabel( t /s )
figure
subplot(211)
f=linspace(-fs/2,fs/2,N)
plot(f,abs(fftshift(y))/N)
title([ 矩形脉冲双边谱 脉冲时间t=[- ,num2str(ta*T), , ,num2str(ta*T), ] ])
xlabel( f /Hz )
)
- 2010-05-25 20:59:59下载
- 积分:1
-
fc_B_rough
一种简单的估计信号载波频率的matlab程序,适用于初始粗略估计。(A simple estimate of the carrier frequency signal matlab procedures applicable to the initial rough estimate.)
- 2013-08-14 20:15:50下载
- 积分:1
-
Matlabcar
这是采用Matlab编写的车牌识别程序,好不好下了就知(锞曠皸锝诧緡锞冿緣holds Matlab Award founded锝碉奖锝筹緞锝碉緟锞嗭緤顏诧奖锝讹緝锝猴緪锝诧緦锝伙胶锞忥緜锞冿緛锞嬶骄锞嶏姜role,)
- 2008-05-09 08:09:22下载
- 积分:1
-
xia_bo
说明: 一个利用小波神经网络进行预测的例子源码。(The use of a wavelet neural network to predict the example source code.)
- 2010-03-18 22:19:40下载
- 积分:1
-
ga_test
说明: 基于遗传算法的简单一元函数和多元单峰函数的优化(基于Sheffield的遗传算法工具箱)(A simple genetic algorithm and multi-functions of one variable optimization of a single peak function)
- 2011-03-15 09:53:27下载
- 积分:1
-
pca
详细的线性PCA计算过程,详细的线性PCA计算过程(The linear PCA detailed calculation process)
- 2012-10-18 11:23:57下载
- 积分:1
-
MATLABfuzzylogic
MATLAB模糊逻辑工具箱的分析与应用,超星电子书(MATLAB fuzzy logic toolbox of analysis and application, e-books Chaoxing)
- 2008-03-03 13:03:17下载
- 积分:1
-
MATLAB
说明: 首页-MATLAB-数据处理-一个文件数据处理小程序(Home-MATLAB-data-processing- a small data-processing procedures document)
- 2008-11-24 20:57:31下载
- 积分:1
-
JTFA(matlab)
说明: 利用matlab实现的时频分析,很好,很强大!(Using matlab to achieve the time-frequency analysis, very good, very powerful!)
- 2008-12-03 19:39:42下载
- 积分:1
-
extract_features_new
haar特征提取,共五类,本人编写,matlab实现(haar feature extraction, a total of five, I write, matlab implementation)
- 2011-05-13 11:38:05下载
- 积分:1