wind_rose

说明：  讲述的直接序列扩频通信系统从信号产生，发射，信道传输，接收整个系统的程序(this is matlab for DS_SS system)

this program creates file list of a directory

利用EM算法对状态空间模型中的参数进行辨识，效果良好(The EM algorithm is used to identify the parameters in the state space model, and the result is good.)

适于matlab初学者学习和参考，内容简练而易懂，为日后深入学习matlab打下基础(Matlab suitable for beginners to learn and reference, concise and easy-to-understand content for future in depth study lay the foundation for matlab)

Matlab的语法，以及绘图常用工具的使用介绍()

射线追踪,包含了起点和终点的射线函数，对于地震传播研究具有重要意义！(Raytracing in a v(z) world. The toolbox contains functions forshooting fans of rays and functions for tracing rays with specific start and end points. General multi-bounce rays with any number of mode conversions can be traced. Automatic routines for P-P and P-S primaries in shot-gather geometry are provided for convenience. Any recording geometry can be used but most functions vectorize (e.g. are most efficient) for shot-gather geometry. Only traveltimes and rayparameters are detemined, not amplitudes. In these routines, the velocity models should be considered as "background" models. This means that the depths at which flections and mode conversions occur are dependent of the depths given as layer boundaries in the velocity models. Velocity models are specified by a vector of velocities and a same-size vector of depths. The j th velocity is in effect from the j th to the j+1 th depth. The bottom of the model is assumed at infinite depth. Thus v=5000 and z=0 specifies a cons)

说明：  三相电压型整流器控制，控制方法是模型预测控制，可以在simulink上完美运行。(The control method of three-phase voltage source rectifier is model predictive control, which can operate perfectly on Simulink.)

说明：  有关图像去噪和调节对比度……………………………………………………(about graghic processin .basic ………………………………………………)

说明：  吴恩达机器学习代码练习第二章----逻辑回归(Andrew.Ng Machine Learning exercise 2)

几十个matlab实用小程序 初学者可以参考学习(Dozens of matlab program beginners can refer to learning)