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FFT

于 2013-12-02 发布文件大小:1KB

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下载积分: 1 下载次数: 23

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1．用Matlab产生正弦波,矩形波,以及白噪声信号，并显示各自时域波形图 2．进行FFT变换，显示各自频谱图，其中采样率，频率、数据长度自选 3．做出上述三种信号的均方根图谱,功率图谱,以及对数均方根图谱 4．用IFFT傅立叶反变换恢复信号，并显示恢复的正弦信号时域波形图(1. Produce sine wave, square wave, and the white noise signal with Matlab, and their time-domain waveform display 2. FFT transform, display each spectrum, where the sampling rate, frequency, length optional data 3. RMS to make maps of the three signals, power spectrum, as well as the number of RMS map 4. Restored by inverse Fourier transform IFFT signal and displays the time domain waveforms sinusoidal signal recovery)

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enigma
The files included implement the M3 Enigma machine. Rotors.m implements the GUI and enigma.m implements the cipher substitutions. The implementation can be used as an aid to teaching the enigma machine. Also, the source can be used to show how to implement an enigma machine. The files are thoroughly commented and the application can run in MATLAB by just typing rotors

2009-02-01 13:09:29下载

积分：1
gold
说明：用MATLAB生成平衡gold序列，对刚学如何生成序列的同学很有帮助，他比较简单(Gold using MATLAB generates a balanced sequence of pairs of just learning how to generate useful sequence of classmates, he is relatively simple)

2010-03-29 10:35:04下载

积分：1
Project
ر ی ا ض ی م ه ن د س ی س ر ی ف و ر ی ه Fourier series

2012-07-12 01:49:45下载

积分：1
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ldpc的编码和译码方法，译码我验证过了，都是对的，包括wbf和bf译码方法，编码方法包括四种不同的编码方法(LDPC encoding and decoding method, decoding I verified, all is right, including any WBF and bf decoding method, the encoding methods include four different coding methods )

2014-09-23 15:31:25下载

积分：1
Time-distance-curve-equation
通过计算垂直缆地震产生各种波的时距曲线公式，画出其波形(By calculating Time-distance curve equation of various waveforms produced by vertical earthquakes，and draw them with matlab )

2013-12-06 17:07:36下载

积分：1
esprit-algorithm-of-ULA
均匀线阵的esprit 算法代码，适用与初学者对esprit算法进行了解，有很大帮助(esprit algorithm of ULA)

2012-11-29 12:28:03下载

积分：1
hongwaikejianguangpeizhun
matlab图像配准红外可见光图像配准的详细方法 (matlab Visible Infrared image registration image registration detailed methodology)

2007-11-28 22:12:43下载

积分：1
line_inter_3d
使用Matlab的M文件编写的数控三轴直线运动代码，为验证DSP上的算法而编(Matlab M-file used to prepare three-axis linear motion of the CNC code, in order to verify the algorithm and the DSP for)

2009-05-24 18:29:18下载

积分：1
fcoding
时间发生时间频域编码与地形图显示时间发生时间频域编码与地形图显示(Frequency domain code)

2012-04-10 16:49:31下载

积分：1
example4_4
例4：在sinc(t)信号中叠加噪声，分析对应频谱 fs=100 采样频率,必须大于两倍基带信号最高频率 ts=1/fs 采样时间间隔 T=2 时间窗大小 ( x=x+0.1*randn(1,N) x=awgn(x,-10, measured ) figure plot(t,x) title( 时域信号图 ) xlabel( t /s ) y=fft(x,N) figure if mod(N,2)~=0 N=N-1 end f=linspace(0,fs/2,N/2) plot(f,abs(y(1:N/2))*2/N) title( 叠加噪声的sinc(t)信号频谱 ) xlabel( f /Hz ) figure y0=y(1:N/2) P=y0.*conj(y0)/N P=10*log10(P) plot(f,P) title( 功率谱 ) xlabel( f /Hz ) )

2010-05-25 20:59:03下载

积分：1

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