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wavelet
说明: 基于MATLAB的小波分析基础丛书,通俗易懂,很容易上手(Based on MATLAB-Wavelet Analysis basic books, user-friendly, it is easy to use)
- 2010-03-18 15:15:52下载
- 积分:1
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matlab2
利用matlab进行五点滑动平均法平滑处理(Using matlab five-point moving average smoothing method)
- 2013-09-15 10:42:21下载
- 积分:1
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MATLAB-function-Quick-Reference
MATLAB函数速查手册!方便新手学习matlab。(MATLAB function Quick Reference! Easy for novices to learn matlab.)
- 2013-09-24 00:52:42下载
- 积分:1
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03607_28
DFT进行频谱分析时的三种现象
1、混叠:对连续信号采样,要求连续信号是带限的,采样频率要足够高。Fs应满足Nyquist采样定理才不产生混叠。
采样前加低通滤波器防混叠
2、频谱泄漏:DFT对时域信号进行了截断(相当于采样信号乘了一个窗函数),时域的乘积相当于频域卷积,改变了原信号频谱。
改用其他窗函数(非矩形)改善泄漏。
3、栅栏现象:DFT 只给出了频谱在采样点上的取值,采样点间的频谱内容丢失。(DFT spectrum analysis of a three phenomena, aliasing : continuous signal sampling, requiring continuous signal is band-limited, the sampling frequency should be high enough. Fs meet the Nyquist Sampling Theorem would not have aliasing. Sampling former low-pass filter plus anti-aliasing 2, spectrum leakage : DFT right time domain signal a disconnect (equivalent to a sampling signal by a window function). time domain is equivalent to the product of frequency-domain convolution, changes in the spectrum of the original signal. Window functions to switch to other (non-rectangular) to improve leakage. 3, fenced phenomenon : DFT spectrum is given only at the sampling point value, sampling points of the spectrum as lost.)
- 2007-05-08 16:22:17下载
- 积分:1
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UKF6
This cod is a RaoB unscented kalman filter in 5 state.
- 2015-03-01 22:19:27下载
- 积分:1
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MATLABR2008_4
《MATLAB R2008图形与动画编程实例教程》的源代码--第四章(" MATLAB R2008 examples of graphics and animation programming tutorial" source code- Chapter IV)
- 2010-06-08 18:24:06下载
- 积分:1
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clear
自适应滤波仿真程序源代码,加澡声,绝对有效(Adaptive filter simulation program source code, plus shower sound, to be effective)
- 2007-09-27 15:33:10下载
- 积分:1
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Imageprocessing
包括图像分析的四部分代码:matlab扩散和高斯函数,线性扩散,线性复扩散,非线性扩散。(It contains four parts:
[1]MATLAB function:diffusion.m gauss.m
[2]Linear diffusion
Applying linear diffusion to images creating linear scale-space.
MATLAB code: demo_lin.m
Image: haifa1.bmp
[3]Linear complex diffusion
Applying linear complex diffusion creating Gaussian and Laplacian scale-spaces. MATLAB code: demo_cmplin.m
[4]Nonlinear diffusions:
Perona-Malik ["Anisotropic diffusion"]
Catte et al. regularization of P-M
Complex ramp-preserving diffusion
Nonlinear edge preserving diffusions.The classical Perona-Malik process: the value of the diffusion coefficient is reduced near edges estimated by the first derivative. Best applied to step edges. A regularized version by Catte et al- the gradient estimation for controlling the process is smoothed by a Gaussian. Proved to be mathematically well-posed. Ramp preserving complex diffusion- best for ramp-type edges. Results are smoother with almost no staircasing effects.
MATLAB code: demo_nldif.m
Image: ct_scan.bmp)
- 2009-02-19 16:35:30下载
- 积分:1
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zishiyingyuzhilvbo
自适应阈值滤波程序,用matlab实现.zishiyinglvzhilvbo(Wiener filtering procedures winer filter to achieve)
- 2009-05-14 17:02:27下载
- 积分:1
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IFsignal
matlab模拟把RF信号和LO信号输入到mixer里得到IF信号。(simulate for put the LO signal and the RF signal into the mixer to get the IF signal.)
- 2013-10-20 12:48:20下载
- 积分:1