filter--classifier

三个MATLAB源代码三个MATLAB源代码三个MATLAB源代码(three matlab code)

运用KPCA方法在ORL人脸库上进行人脸识别，分类器为最近邻分类器。(KPCA method using ORL face database for face recognition, classification for the nearest neighbor classifier.)

DSCDMA通信系统仿真源程序，调试通过(DSCDMA system code)

说明：  matlab基础知识学习资料，适合初学者学习，希望对有兴趣爱好者提供帮助。(matlab basic knowledge of learning materials, suitable for beginners to learn, I hope fans are interested to help.)

降维工具箱，有PCA，LDA等等比较全面，里面有说明。(Dimensionality reduction toolbox, PCA, LDA, and so a more comprehensive, there are instructions.)

导航初对准程序，在接连导航技术中方便进行姿态更新计算(Align the beginning of the navigation program, in a series of navigation technology to facilitate attitude update calculations)

2. 设 是窄带信号，定义 是在 区间上均匀分布的随机相位。 是寬带信号，它是一个零均值、方差为1的白噪音信号e(n)激励一个线性滤波器而产生，其差分方程为 。 1） 计算 和 各自的自相关函数，并画出其函数图形。根据此选择合适的延时，以实现谱线增强。 2） 产生一个 序列。选择合适的 值。让 通过谱线增强器。画出输出信号 和误差信号e(n)的波形，并分别与 和 比较。 (Computer Experiments: 1. Consider an AR process x(n) defined by the difference equation where v(n) is an additive white noise of zero mean and variance .The AR parameters and are both real valued: a) Calculate the noise variance such that the AR process x(n) has unit variance .Hence , generate different realization of the process x (n). b) Given the input x (n), an LMS filter of length M = 2 is used to estimate the unknown AR parameters and . The step size is assigned the value 0.05. Compute and plot the ensemble average curve of and by averaging the value of parameters and over an ensemble of 100 different realization of the filter. Calculate the time constant according to the experiment results and compare with the corresponded theoretical value. c) For one realization of the LMS filter, compute the prediction error And the two tap-weight errors and Using power spectral plots of , show that)

利用理想单位脉冲响应,低通、高通滤波频率在单位脉冲响应下，通过汉宁窗计算理想的截止频带滤波单位脉冲响应(To compute the ideal bandstop filter unit pulse respondence,ideal unit pulse respondence, low/high cutoff frequency, and unit pulse respondence are used in consideration of Hanning windows)

Conversion istruction for assembler,the are the first istruction for a programm of emulator,in particolar with the programm emu8086

波束形成过程中，滤波器权值固定不变。一旦阵列的几何形状、目标方向确定，其波束模式特性也将确定(In the beamforming process, the filter weights are fixed. Once the array geometry and target direction are determined, the beam pattern characteristics will also be determined.)