elect_hooter

该代码为多频外差四频相移的原理程序，开发环境为MATLAB,可以帮助初学者快速了解外差法的原理。(The code on multiple frequency heterodyne principle of four frequency phase shift process, development environment of MATLAB, can help beginners to quickly understand the heterodyne principle. )

transformed sec2time in matlab

灰色模型（GM)。如果一个系统具有层次、结构关系的模糊性，动态变化的随机性，指标数据的不完备或不确定性，则称这些特性为灰色性。具有灰色性的系统称为灰色系统。在灰色系统理论中，利用较少的或不确切的表示灰色系统行为特征的原始数据序列作生成变换后建立的，用以描述灰色系统内部事物连续变化过程的模型，称为灰色模型，简称GM模型。(GM 1 to 1)

说明：   该程序是使用Matlab仿真协同通信的DF（解码转发）基本性能，也可以作为学习Matlab 通信仿真的入门实例。 (This program is to simulate basic performance of collaborative communication DF (decoding forwarding)by using Matlab, also can be used as a learning Matlab communication simulation of introductory examples.)

学习matlab的必备，对于初学者来说希望能帮到你(Learning Matlab essential, hope you can help for beginners)

说明：  康奈尔大学开发的基于matlab的有限元计算程序，感兴趣的可以看看，有gui 界面，相关的教程可以登录下面的网站https://confluence.cornell.edu/display/SIMULATION/MATLAB+Learning+Modules(Matlab-based Cornell University developed the finite element program, interested can see, there are gui interface, related tutorials can log the following Web site https:// confluence.cornell.edu/display/SIMULATION/MATLAB+ Learning+ Modules)

主要关于美国成功学专家成功学的经验介绍，让人摆脱困境，迎接新的人生！(Main expert on the U.S. success successful learning experiences, people bail out, meet new life!)

guide electric and magnetism

两种滤波反投影重建方法的比较Filter back projection ct image reconstruction(Filter back projection ct image reconstruction)

matlab 代码，利用分步傅里叶方法求解NLSE方程(matlab code, solve the equation NLSE)