doppler_shif

This is source code for AMAC research article

用matlab实现EM算法，进行聚类分析。-(EM algorithm using matlab realize, cluster analysis.-)

AP聚类算法，很好用的聚类算法，matlab实现(AP clustering algorithm, well used clustering algorithm, matlab achieve)

主要是基于mtlab的程序，基于多相结构的信道化接收机，分数阶傅里叶变换计算方面。( Mainly based on the mtlab procedures, Channelized receiver based on multi-phase structure, Fractional Fourier transform computing.)

finds the ratio between number of local extrema of a signal (vector) to the size of the signal (vector)

现代通信系统使用MATLAB一书中第一章的所有程序，书的作者是刘树堂(Modern communication systems using MATLAB, a book of all programs, the author of the book is LIU Shu-tang)

Codec driver for ST STA32x 2.1-channel high-efficiency digital audio system.

This file gives the Ground Tracks of a Geostationary satellite

以前使用matlab和vc混合编程都使用的是先将m程序用mcc转化成dll，再在vc中调用 的方法。这种方法对比较复杂的m文件很方便，但是对一些小的程序，如曲线可视化、计算矩阵特征值等，对这些只需要一两行代码的小程序，再使用dll就得不偿失了。经过试验后，发现可以直接在C++程序中调用matlab c/c++ math & graphic library的函数。(before using Matlab and vc mixed programming using the first procedure used mcc m into dl l, then vc call method. This method of complex documents m very easy, but for some minor procedures, such as curve visualization, matrix eigenvalue calculation, and so on, these are just two lines need a small procedure code, reuse dll on the loss outweighs the gain. After testing, can be found directly in the C Programming Calling Matlab c/c math)

应用lqr方法实现四旋翼姿态角控制，内附matlab代码(Matlab implementation of helicopter LQR control)