NAH1

三角波及其频谱三角波及其频谱三角波及其频谱(The triangle spread the spectrum)

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)

简单的matlab画标定板程序，用以生成像素级的标定模板，直接打印，避免了其他方法画出标定板产生虚边的问题。(Simple matlab drawing board calibration procedure to generate a pixel-level calibration template, print directly, avoiding the other methods to draw the calibration panels to generate virtual edge issue.)

Image Watermarking using DWT algorithm

一种流形学习算法（很好用），用于特征降维，特征融合，相关分析等,分析了该信号的时域、频域、倒谱，循环谱等。( A fluid manifold learning algorithm (good use), For feature reduction, feature fusion, correlation analysis, Analysis of the signal time domain, frequency domain, cepstrum, cyclic spectrum, etc.)

说明：  本文件为MATLAB GUI设计简单例程，包括两个源文件（.m和.fig）,还有可供查询的文本文件和Exel表格。其功能为查询txt及Exel文件格式的学生成绩。(This document is designed to be simple routines MATLAB GUI, including the two source files (. M and. Fig), there is a text file and available for query Exel form. Txt, and its function as a check student achievement Exel file formats.)

单通道PCMA信号的盲分离算法，包括主程序中BPSK信号源的产生源码及单路信号正交分解(Single-channel blind signal separation algorithm PCMA, including the main source of BPSK signals in the generation of single signal source and the orthogonal decomposition)

对时间序列或者信号进行fft谱分析，可以打开任意数据文件后分析，很方便使用。(FFT transfer of matlab code,it is useful for signal analysis.)

Guide wave on a line

解线性方程组之直接法【matlab例程】经典算法直接应用方便快捷(Convenient and direct method for solving linear equations of the [routine] classical algorithm matlab direct application)