PRACTICA-4---DELTA

说明：  发射分集alamouti编码，并与无分集时比较，有明显性能提高(Alamouti coding transmit diversity, and diversity when compared with no, there are clear performance improvement)

wavelet based image fusion

Routines to implement leaf blocks of attributes as Btrees of hashed names.

用巴特沃兹低通（高通）、高斯低通（高通）、拉普拉斯高通滤波器对图像进行平滑（锐化）处理，以及Unsharp mask与highboost filtering(Butterworth low-pass (high-pass), Gaussian low-pass (high-pass), Laplacian high-pass filter on the image smoothing (sharpening) processing, and Unsharp mask highboost filtering)

排列熵，算法简单，运算速度快，对噪声不敏感，计算值稳定等优点(The entropy is simple, the operation speed is fast, it is not sensitive to noise and the calculated value is stable.)

说明：  关于解微分方程的matlab小程序，适合本科生学习使用。(MATLAB in Physics is a four lecture series in MATLAB that is offered to first year physics undergraduate students. This lecture shows how to use MATLAB to simulate physical systems using a range of methods. Projectile motion is analysed using the Symbolic Math Toolbox, then more complicated chaotic systems are simulated using the MATLAB ODE solvers. Some advanced programming techniques such as Object Oriented Programming (OOP) and Graphical User Interface (GUI) programming are briefly covered. The aim of this lecture series is to introduce students to computational methods in MATLAB to solve problems arising in physics that cannot be solved analytically. No prior knowledge of MATLAB is required. Themes of data analysis, visualization, modelling and programming are explored throughout these lectures. )

自己编写的ChebyshevII型滤波器的源程序.对于毕业设计的同学,很有参考价值.它是ChebyshevII型低通滤波器(their ChebyshevII prepared by the filter type of the source. Design for graduate students, great reference value. It is ChebyshevII-type low-pass filter)

说明：  怎么在函数中加入高斯噪声，白噪声，比较它们的性质，并求它们的相关性(how to insert gaosi noise,white noise and then how to konw their correlation)

用matlab对wav文件采用不同的方式读取（wavread和fopen），并对其进行低通滤波处理。滤波用的fir直接型低通滤波器(to read the wav file in different ways with Matlab (wavread, and fopen), and then low-pass filtering. the low-pass filter is direct_type FIR filter )

灰色线性组合模型算法，可以实现该算法的建模，拟合以及预测(Grey linear combination model algorithm, the algorithm can be implemented for modeling, fitting and forecasting)