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classical sliding mode controller

一种流形学习算法（很好用），有较好的参考价值，感应双馈发电机系统的仿真，GPS和INS组合导航程序，有PMUSIC 校正前和校正后的比较，多抽样率信号处理。

Code to avoid repetions in Principal Component Analysis of a square matrix.

code based on cardiovascular images for extracting intima media layer

用Matlab编写的铅垂平面内的比例导引方案弹道程序，目标为水平面内的平动物体(Proportional navigation scheme with ballistic programs written in Matlab vertical plane, the target for the level of animal body in a horizontal plane)

说明：  四旋翼无人机是一种可以被遥控也可以在无人为控制的状态下执行预定任务的飞行器，与传统直升机相比四旋翼飞行器的机械结构简单，且具有高精度，灵活精度以及较低成本的特点，被广泛用于军事侦察，农艺播撒、快递派送、摄影工作等领域。四旋翼飞行器自身具有欠驱动、多变量、非线性等特性，在外界的噪声干扰情况下，增加了四旋翼无人机的不稳定以及控制系统的设计难度。所以对四旋翼飞行器的位姿控制的研究，可以开拓科研人员对控制算法以及滤波算法的认知，具有重要的研究意义。(Four-rotor UAV is a kind of aircraft that can be controlled remotely or perform scheduled tasks without human control. Compared with traditional helicopters, the Four-rotor UAV has simple mechanical structure, high precision, flexible precision and low cost. It is widely used in military reconnaissance, agricultural broadcast, express delivery, photography and other fields. Four-rotor UAV has the characteristics of under-actuation, multi-variable and non-linearity. Under the circumstance of external noise, the instability of Four-rotor UAV and the difficulty of control system design are increased. Therefore, the research on attitude control of Four-rotor aircraft can broaden the knowledge of control algorithm and filtering algorithm for researchers, and has important research significance.)

Matlab book Engineering Matlab Programming Engineering Matlab Programming

本程序实现了哈夫曼编码，可以应用在图像处理中压缩图像，属于无损压缩！(huffman)

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.)

说明：  小波图像去噪程序，简单实用，对初学者很有用(Image denoising procedure is simple and practical, very useful for beginners)