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case study of multi-disciplinary modeling using MATLAB

该文件是一个盲均衡算法程序，把输入信号矩阵做了一次解相关处理(The file is a blind equalization algorithm, the input signal correlation matrix made ​ ​ a deal with the solution)

说明：  很全的matlab波束形成算法，包括有LCMV,MVDR等算法(Very complete matlab beamforming algorithm, including LCMV, MVDR and other algorithms)

含：分析物理磁盘的分区表和各分区的bootsector for bitlocker以及WINDOWS下设备枚举.(including : Analysis of the physical disk partition table and the district for the bootsector bitlocker and W INDOWS equipment under enumeration.)

采样频率 fs=10000 轴承外环故障信号 fid=fopen( bearingout.dat , r ) 故障 N=1024 xdata=fread(fid,N, int16 ) fclose(fid) xdata=(xdata-mean(xdata))/std(xdata,1) 时域波形 figure(1) plot(1:N,xdata) xlabel( 时间 t/n ) ylabel( 电压 V/v ) db10小波进行4层分解 一维小波分解 [c,l] = wavedec(xdata,4, db10 ) 重构第1～4层细节信号 d4 = wrcoef( d ,c,l, db10 ,4) d3 = wrcoef( d ,c,l, db10 ,3) d2 = wrcoef( d ,c,l, db10 ,2) d1 = wrcoef( d ,c,l, db10 ,1) ( Sampling frequency fs = 10000 bearing outer ring fault signal fid = fopen (' bearingout.dat' , ' r' ) failure N = 1024 xdata = fread (fid, N, ' int16' ) fclose (fid ) xdata = (xdata-mean (xdata))/std (xdata, 1) time-domain waveform figure (1) plot (1: N, xdata) xlabel (' Time t/n' ) ylabel ( ' voltage V/v' ) db10 wavelet decomposition 4 layer one-dimensional wavelet decomposition [c, l] = wavedec (xdata, 4, ' db10' ) 1 ~ 4 reconstructed detail signal d4 = wrcoef (' d' , c, l, ' db10' , 4) d3 = wrcoef (' d' , c, l, ' db10' , 3) d2 = wrcoef (' d' , c, l, ' db10' , 2) d1 = wrcoef (' d' , c, l, ' db10' , 1) )

DCT变换1、 提取彩色图像，将图像大小限制为512*512*3； 2、 提取彩色图像三个颜色分量的矩阵，每个矩阵单独处理； 3、 将矩阵分为8*8的块，做DCT变换； 4、 提取每个块的一部分DCT系数做IDCT变换，显示基本图像； 5、 再提取每个块的一部分DCT系数做DCT反变换，得到增强层1，与前一次得到的数据叠加，得到质量更好的图像。 (DCT transform)

经验模态分解函数，可实现信号分解及滤波的功能。(EMD scheme which can achieve signal decomposition and noise elimanition.)

说明：  利用Matlab和SPSS软件实现聚类分析.运用Matlab中的一些基本矩阵计算方法，通过自己编程实现聚类算法(Matlab and SPSS software using cluster analysis. The use of Matlab, some of the fundamental matrix method, clustering algorithms, through their own programming)

比较了匹配滤波器和FFT对信号的处理效果的异同！(Comparison of the matched filter and FFT signal processing effects on the similarities and differences!)

用matlab的四阶矩方法进行可靠度解析科学计算(Matlab fourth moment method for reliability resolve scientific computing)