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Applied.Econometrics.using.MATLAB A very good book which tells applied econometrics

小波变换进行变速箱故障诊断 首先将s1和s2信号时域谱（s1代表维修前的振动信号，s2代表维修后的振动信号），画出来进行对比，会发现s1信号的振动幅值会比较高；然后对s1和s2分别进行小波分解并画出各层的时域谱，只对比s1和s2分后的最高时域谱，s2更加的具有周期性，且幅值较小，s2周期性不够明显，且振动过于密集。分析完时域谱后开始分析频谱，首先对原信号s1和s2fft转换，得到频谱图，如图，然后再对小波分析后高频部分进行fft转换，做出频谱图。对比后我们发现，在f 2375HZ出（也就是齿轮的啮合频率），s1信号频谱幅值会有急剧的升高，然后，其谐波的幅值也会增大。所以可以推断出该维修前的增速箱的齿轮可能出现问题。(Gearbox fault diagnosis based on wavelet transform s1 and s2 first time domain signal spectrum (s1 behalf of the vibration signal before maintenance, vibration signal s2 representative of repaired), drawn comparison, you will find a signal s1 vibration amplitude will be higher then s1 and s2 respectively wavelet decomposition and draw the layers of time-domain spectrum to only a maximum time domain spectroscopy s1 and s2 points after, s2 is more cyclical and smaller magnitude, s2 cyclical enough obviously, and the vibration is too dense. End domain spectral analysis after the beginning of the spectrum analysis, the first of the original signal s1 and s2fft conversion to give the spectrum, as shown, and then after the high frequency part of wavelet analysis fft transformation to make spectrum. We found that after the comparison, at f 2375HZ out (i.e. the gear mesh frequency), there will be a sharp increase in the amplitude spectrum of the signal s1, and then, the amplitude of the ha)

用MATLAB实现功率谱的线性均方估计随着信噪比的变化的改变情况(MATLAB realization of the power spectrum with a linear mean square estimation changes with the change in the situation SNR)

本章对该文档的目的、功能范围、术语、相关文档、参考资料、版本更新进行说明。(The purpose of this chapter to the document, functional scope, terms, related documentation, reference materials, updated version will be described.)

说明：  直方图添加与去除椒盐噪声和高斯噪声并进行对比，以及直方图均衡化的matlab程序实现代码 (Add the histogram and remove the salt and pepper noise and Gaussian noise and contrast, and histogram equalization matlab program code)

现代信号处理的基本模型，能够有效的处理信号(Modern signal processing basic model, to be able to effectively handle the signal )

ukf，卡尔曼滤波，目标航迹融合，matlab(ukf,matlab,kalman filtering)

matlab模糊聚类算法进行图像分割的源程序(tuxiangfenge)

数字图像处理中利用matlab完成图像复原、彩色变换、边缘检测、二值图像细化和伪彩色处理(Digital image processing complete use of matlab image restoration, color transformation, edge detection, binary image refining and false color processing)

通过基2 实现fft变换 可自定义输入变量 带有详细注释(Achieved through the radix-2 fft transform the input variables can be customized with detailed notes)