3-PCM-CODE

线性时变系统控制器设计的工具包，所用的方法是基于变化参数的李亚普诺夫线性不等式。每个m文件都有详细的说明。(Linear time-varying system controller design toolkit, the methodology used is based on changes in parameters of linear inequality Lyapunov. M files are each detail.)

一束光通过一个透明圆柱体，圆柱后有一个屏幕，程序最终反映屏幕上的 图象随圆柱半径的变化而变化。其中光强分布是采用相干叠加原理，因为其中采 样点数目不足，所以光强分布的结果和真实的有一定差距。增加采样点数目和改 变采样点范围能够改善输出光强的结果逼真程度。(一束光through a transparent cylinder, a cylindrical post-screen process will ultimately reflect the on-screen image with the cylindrical radius change. Light intensity distribution of which is the principle of coherent superposition, because the insufficient number of sampling points, so light intensity distribution of the results and have some real gaps. Increase in the number of sampling points and to change the scope of sampling points can improve the outcome of the output light intensity the degree of realism.)

说明：  用matlab实现自己编程实现图像处理，通过matlab强大的功能显示效果(Realize their own programming with matlab histogram equalization, by matlab powerful display)

extended kalman filterr

说明：  ex2_1 利用Z变换求系统输出 ex2_2 求DFT ex2_3 求序列的圆周移位 ex2_4 求序列的圆周卷积 ex2_5 简单的DFT实例 (ex2_1 the use of Z transform ex2_2 demand for system output DFTex2_3 seeking ex2_4 shift sequence for the circumference of the circular convolution sequence ex2_5 simple example DFT)

Edge detection result should be enhanced using linear method like Median filter to remove the garbage around the pupil to gain clear pupil to determine perfect centre. Get the centre of the pupil by counting the number of black pixels (zero value) of each column and row. Then get each row and column that has the maximum number of these black pixels. Then determine the center by simple calculation according to the image coordinate to set it correct on the image, consequently we can determine the radius of the pupil. Thus we can find the pupillary boundary (inner). A similar procedure is extended by using a coarse scale to locate the outer boundary (limbus) which can be apparent by using the mid-point algorithms of circle and ellipse.

说明：  该程序功能实现重力勘探中的多球体平面异常计算，并相应的进行其他操作(The program functions to achieve more in the sphere of gravity exploration exception plane calculations and other operations corresponding to)

应用MATLAB软件模拟rossler模型，采用ode45解法(rossler model)

voice applicattion ptt internal clock 48Mhz, ptt personal area network

利用Matlab,实现水下声传播模型仿真(Use Matlab simulation of underwater sound propagation model)