4-chapter

用matlab追迹子午光线，处理像差问题(Meridian ray tracing using matlab to deal with the problem aberration)

说明：  现代数字信号处理一些计算机作业和matlab程序(Digital signal processing computer operations and procedures)

产生线性调频信号以及均匀脉冲截断的线性调频信号，并分别生成频谱(It generates the lfmcw signal and the lfmcw signal modulated by the uniform pulse sequence, and it also generates the frequency attribution of the two signals.)

this code contain hmm speech recognition

说明：  implementation of simple Evolutionary Programming to find minimum value from given function.

Very good book on matlab

simulation HVDCCigre in matlab simulink

matlab参考资料，非常全面的书籍,希望可以帮到大家。(matlab reference materials, very comprehensive book, I hope you can help.)

实现希尔伯特-黄变换的功能，并带有一段测试数据。希尔伯特-黄变换是使用EMD分解将信号分解为本征模态函数（IMF），然后求得IMF分量的瞬时频率。其对于非稳态和非线性信号具有优良的效果。(The function plot_hht is a realization of the Hilbert-Huang transform (HHT). The HHT decomposes a signal into intrinsic mode functions (or IMFs), and obtain the instantaneous frequency data. It is designed to work well for data that are nonstationary and nonlinear.)

matlab实现的阴影消除程序，图像处理的常用程序，供大家参考(Shadow Elimination matlab implementation procedures, common image processing program, for your reference)