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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
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Rongekutta
龙格库塔算法,用于姿态角的解算,此程序采用四阶龙格库塔法进行计算。(Ronge Kutta algorithm for attitude angle calculation, this procedure using four order Ronge Kutta method.)
- 2016-06-04 16:30:42下载
- 积分:1
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15823_chat
Window下的select方式网络程序的范例(Window select the mode network programming paradigm)
- 2005-02-22 13:40:52下载
- 积分:1
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Credit-risk-prediction
可以用来进行信用风险预测的matlab代码,直接模仿就可以用了(Can be used for credit risk prediction matlab code, you can use a direct imitation)
- 2013-10-01 22:22:42下载
- 积分:1
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MATLAB-MBPSO-master
说明: 基础BPSO的matlab程序,可用于学习使用(Matlab program of basic BPSO)
- 2019-03-11 10:36:50下载
- 积分:1
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zarchan
这是zarchan书的fundamentals of kalman filter的matlab原程序.对学习卡尔曼滤波非常有帮助(This is the fundamentals of the Kalman filter Matlab original program. Kalman filtering of learning has been very helpful)
- 2006-06-03 22:41:09下载
- 积分:1
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Speech-endpoint-detection
双门限法,双门限法的改进和推广,相关法的端点检测,方差法的语音端点检测,谱距离法的端点检测,谱熵在端点检测中的应用(Double threshold method, double threshold method improvement and promotion, endpoint detection correlation method, endpoint detection variance method, the endpoint detection spectral distance method, the Spectrum Entropy in the endpoint detection)
- 2014-11-19 20:52:34下载
- 积分:1
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LQR-Control
People can use this to build a MATLAB project for LQR control
- 2014-02-08 05:34:34下载
- 积分:1
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Hopfield
solving travelling salesman problem in matlab usin neural network
- 2010-12-15 03:42:49下载
- 积分:1
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wavelet_denosie
说明: 讲述了Matlab中小波降噪技术的使用,并讲述小波分解原理及如何检验。(Tells Matlab to use the wavelet noise reduction technology, and wavelet theory, and how about the test.)
- 2010-04-12 07:16:07下载
- 积分:1