j_four_1

A PIV Post-processing and data analysis toolbox(The PIVMat Toolbox for Matlab contains a set of command-line functions to import, post-process and analyse 2- and 3-components vector fields from PIV (particle image velocimetry), stereo-PIV, DIC (digital image correlation) SS (synthetic schlieren) or BOS (background-oriented schlieren) applications. Main Features: - Import vector fields from PIV (Particle Image Velocimetry) or other related technics, such as DIC (Digital Image Correlation), SS and BOS (Synthetic Schlieren and Background-oriented Schlieren). - Compatibale with files from DaVis (LaVision), DPIVSoft (Meunier & Leweke), VidPIV (Oxford Laser), MatPIV and Optical Flow. - Standard vector field operations: interpolation, filtering (median, Butterworth...), averaging (temporal, spatial, azimuthal...), derivatives computation (vorticity, divergence, strain, Q-factor...) - Fully vectorized: all operations directly apply on arrays of fields (no for loops) - More than 60 functions with full on-line documentation sampl)

用matlab编写的程序，实现图像的3*3、7*7、9*9算术均值滤波和几何均值滤波，文档中有matlab源码以及运行结果截图(Programs written with matlab, image 3* 3,7* 7,9* 9 arithmetic mean filter and geometric mean filter, documentation and operating results have matlab source screenshot)

仿真FBG传输特性，共三个函数，利用光纤的传数矩阵和耦合模理论，可在main函数中修改参数(Simulation FBG transmission characteristics of the three functions, the use of optical fiber transmission matrix and coupled-mode theory, the parameters can be modified in the main function)

本文先简要介绍了矩阵的积分和微分的定义；接着通过弹簧-质量块儿-阻尼器系统的例子，阐述了求解常微分方程数值解的常用方法；最后，在前两部分的基础上，总结了用MATLAB求解形如_X(t) = f(X(t); t) 矩阵微分方程数值解的方法。(In this paper, the definition of integral and differential of matrix is briefly introduced. Then the common method of solving numerical solution of ordinary differential equation is described by the example of spring mass block damper system. Finally, on the basis of the first two parts, the solution of the form of _X is summed up by MATLAB. (T) = f (X (T); t) numerical solution of matrix differential equations.)

c est un code matlab qui compare les différentes systèmes Multi-antennes MIMO MIMSO SIMO SISO de point de vue Capacité

NCC算法的matlab的实现，代码简单易懂，只是运行时间稍长。(NCC algorithm matlab implementation, the code is simple to understand, just run a little longer.)

matlab 一维光栅本征模式展开方法用于计算光栅透射反射系数等(matlab one-dimensional grating eigenmode expansion method is used to calculate the reflection coefficient of the transmission grating)

这个程序是用改进平方根法对线性方程组进行求解，要求系数矩阵必须是对称正定矩阵(This procedure is used to improve the square root method to solve linear equations, requiring the coefficient matrix must be symmetric positive definite matrix)

说明：  用MATLAB做的模拟计算器的一个小程序。(do with MATLAB simulation of a small calculator procedures.)

The industrial I O core in kernel channel mapping.