pi4_DQPSK

image cropping in matlab a digital image processing project with .m files and presentation

光子筛孔分布的例程，环数不同，用于光子筛成像时使用(Photon sieve distribution routines different rings, used for imaging photon sieve)

说明：  传输方程中对流项的ccfd数值求解实现及算例。(Numerical solution of convection equation with ccfd method.)

BP辨识，，，，，，，，，，，，，，，，，，，，，(bp identify，，，，，，，，，，，，，，，，， )

2阶3型锁相环仿真,完全个人编写，可设置参数，适合文章仿真使用。(2end order type-III PLL Simulation)

GOOGLE的图像检索程序，应用MATLAB编写，简单易懂，适用于初学者(GOOGLE image retrieval procedures, using MATLAB to prepare, easy to understand for beginners)

说明：  基于随机森林思想的组合分类器涉及——乳腺癌诊断(The combined classifier based on random forest idea relates to breast cancer diagnosis.)

epsk调制，用MATLAB实现EPSK调制。(epsk modulation, modulation EPSK use MATLAB to achieve.)

用数字图像处理的方法进行高速公路车流量的统计，在matlab平台上用的事背景差法。(Highway traffic volume statistics, the in matlab platform with the things background subtraction method of digital image processing.)

双馈风力发电系统仿真模型，采用背靠背式PWM调制方式。(Double-fed wind power generation system simulation model, using back-type PWM modulation.)