secant

说明：  Savitzky & Golay 微分 (Savitzky )

说明：  二维光子晶体禁带的遗传优化算法.在平面波展开法的基础上，使用遗传算法寻找具有最大光子禁带的二维光子晶体结构(Photonic Band Gap Genetic Algorithm)

阵列信号处理中信源数目估计----盖而圆半径法(CITIC source array signal processing the estimated number of covered and Radii----)

此为matlab函数库，种类齐全，可供用matlab仿真的开发者使用。(malab data)

matlab function to calculate jacobian matrix fou a quadrilateral element

说明：  室内三维定位相关程序，主要用于数学建模，了解如何用于实际场景(Indoor three-dimensional positioning related procedures, special for mathematical modeling)

说明：  现代控制理论实验课 matlab倒立摆仿真代码和动画演示 使用matlab的倒立摆建模和仿真设计 使用了状态反馈控制器设计闭环反馈控制系统 实现了动画演示 文档说明：（中文字符显示某些问题，后续更改，系统的simulink构建很简单，这里没有注意到） 系统分析文件夹 .m输入为加速度的情况下的开环系统.m文件 F .m输入为力开环系统的m文件 State_FeedBack_controller.m输入为加速度的闭环系统的m文件 动画演示文件夹 sys.m生成整个控制系统的s函数 pendan.m显示动画的s函数 dh.mdl最终的动画倒立摆simulink的建造(Modern control theory experiment course Matlab inverted pendulum simulation code and animation demonstration Modeling and simulation design of inverted pendulum using MATLAB The closed-loop feedback control system is designed by using the state feedback controller The animation demonstration is realized Document description: (some problems of Chinese character display, subsequent changes, the system's Simulink construction is very simple, not noticed here) System analysis folder Open loop system. M file with. M input as acceleration The input force of the open loop F.M system State_ FeedBack_ The controller. M input is the m file of the closed loop system with acceleration Animation folder Sys. M generates the s function of the whole control system Pendan. M s function for displaying animation dh.mdl The construction of the final animation inverted pendulum simulink)

基于Matlab的MIT-BIH数据读取(Matlab based on the MIT-BIH data read)

激光位移传感器测量齿轮的数据，在数据中进行特征点提取算法。(The laser displacement sensor measuring gear data, feature points in the data extraction algorithm.)

本代码利用同态滤波算法来对图像进行处理，从而实现增强图像质量，使用的是matlab环境(this code is used to accomplish the image enhancement , using homomorphic filtering aglorithm)