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this file is a matlab program. File name is 2D fast fourier transform.

关于直接序列扩频通信的，介绍了其原理，给出了SIMULINK仿真模型，并对各个模块作了详细的描述。(On direct sequence spread spectrum communications, introduced its principle, given SIMULINK simulation model, and each module in detail description.)

Extended kalman filter for Van der Pol system

用matlab编的一个用于对统计数据进行威布尔分布的估计，并对其进行三参数的评估与计算(Matlab compiled a for the statistical data of weibull distribution estimates, and the three parameters calculation and evaluation)

dc motor speed control using fuzzy logic

GPS卫星捕获方式中的滑动相关捕获，包括码生成，数字离散化，画有三维捕获效果图(GPS satellite acquisition mode captures the sliding correlation, including code generation, digital discrete, three-dimensional painted renderings capture)

包含单位负反馈的三阶系统的设计与校正（matlab程序）(Contains the unit)

hanning window for filter matlab code with example

offsetPlot matlabsadas

说明：  abaqus金属材料子程序开发语句说明，有助于读者理解编程含义。(Description of ABAQUS subroutine for metal materials)