prtools

文件包含了一个关于matlab人脸识别的案例分析，有助于很好的学习模式识别。(File contains a case analysis about matlab face recognition, helps to great learning pattern recognition.)

backstepping algorithm

基于局域均值的盲源分离技术在故障诊断中的应用文章，希望对大家有用！(Based on Local Mean Blind Source Separation Techniques in Fault Diagnosis article, I hope useful for everyone!)

说明：  针对一般的粒子群优化(PSO)学习算法中存在的容易陷入局部最优和搜索精度不高的缺点,对改进型PSO算法进行研究。由于惯性权重系数ω对算法是否会陷入局部最优起到关键的作用,因此,通过改变惯性权重ω的选择,对惯性权重系数采取线性减小的方法,引入改进型的PSO算法。采用改进的PSO算法对PID控制器进行参数优化并把得到的最优参数应用于控制系统中进行仿真。仿真实验结果表明:改进型PSO算法不会陷入局部最优,能得到全局最优的PID控制器的参数,并使得控制系统的性能指标达到最优,控制系统具有较好的鲁棒性。(Aiming at the shortcomings of general PSO learning algorithm, which is easy to fall into local optimum and low search precision, the improved PSO algorithm is studied)

实现香农编码，计算平均码长、平均信息熵和编码效率。(Shannon coding, and calculate the average code length, the average information entropy coding efficiency.)

张德丰基于MATLAB的系统分析与设计——小波分析+范例源码；详细介绍包括小波分析工具箱的的使用（范例代码），小波去噪，图像压缩，并范例实现。另外还有小波包分析技术的理论及应用(Zhang Defeng MATLAB-Based System Analysis and Design- wavelet analysis+ example source details, including the use of wavelet analysis toolbox (sample code), wavelet denoising, image compression, and examples of implementation. There is also the theory of wavelet packet analysis and application)

ofdm code with simlink

张量的模式展开是一个基本的技术，已有各种代码展开结果不尽相同，本代码是根据张量研究领域权威文献“Tensor Deco们positions and Applications”中的公式编写，并经过多次实例验证，与理论描述相符。文件包括两个m文件，一个是按模n展开，而另一个是逆变换，即按模n叠合。(unfolding of the tensor mode is a basic technology, there are a variety of code to make different result. However this code is written by referring to the authority of the tensor field of research literature Tensor Deco their positions and Applications and after several instances verification, is consistent with the theoretical description. The documents include two m-files, one is unfold.m, and the other is the inverse transformation, that is refold.m.)

PCA - SIFT matlab source code

MATLAB主要函数和命令注释，包括操作系统命令，编译M文件，用户交互式功能(MATLAB main function of the Notes and orders, including orders operating system, compiler M paper user interactive functions)