FDTD_CPML_3D

matlab的帮助文档，用于查阅使用matlab过程中遇到的问题以及解决方案。(matlab help document the process for access to use the matlab problems and solutions.)

VC++调用Matlab Builder for.NET 的COM组件(VC++ Call Matlab Builder for.NET the COM components)

转载：卷积编码＋维特比译码的matlab程序(Reprinted: convolutional code+ matlab Viterbi decoding process)

riccati传递矩阵法算例，计算大转子的临界转速，固有频率(riccati example transfer matrix method to calculate the critical speed the greater trochanter, natural frequency)

一种全局的直接优化方法，优化过程中无需用到目标函数的导数信息。(The purpose of this brief user guide is to introduce the reader to the DIRECT optimization algorithm, describe the type of problems it solves, how to use the accompanying MATLAB program, direct.m, and provide a synopis of how it searches for the global minium.)

求点d1到直线d2-d3的距离，并画线。范例： [d dl]=find_dl([2 1],[8 3],[4 7]) 则 dl=[6 5]。(Example: [d dl] = find_dl ([2 1], [8 3], [4 7]) if dl = [6 5].)

it includes some usefull codes in speech processing

隔离准Z源逆变器的开环控制，希望对初学者有些帮助。(Isolation the open-loop control of Z source inverter, and want some help for beginners. )

transmission of image with dssss in AWGN channel

首先从视频中提取100张图片，用其中五十张图片根据平均值法获得背景图片，然后做差，二值化，提取目标。(First, extracting 100 images from the video ,using fifty pictures to obtain the background image with the method of average. Then frame difference, binary, extracting the target. )