DFT

here i have attatched codes for pca image processing

this file contents many of matlab intermediatte lectures. I made by myselves..

基于知识的恒虚警检测——KB-CFAR检测器：包括对于无目标、仅有噪声的信号进行KB-CFAR检测的仿真，以及对于含目标、且在瑞利杂波背景下的KB算法仿真。一些程序主要是为了绘图，画出KB-CFAR检测过程中的信号波形以及检测门限对比图；而另一些程序是为了计算KB-CFAR检测过程中的检测概率和虚警概率。(KB-CFAR detectors: simulations of detection to signals with no target but noise only, as well as signals with target and the background of Rayleigh clutter. Some programs are aimed at giving pictures of the signals and detectiong threshold in the process of detection using KB-CFAR algorithm, while other programs are aimed at calculating the detecting rate and false alarm rate of KB-CFAR algorithm.)

一些比较经典的MATLAB gui界面的例子,对指导GUI编程很有意义 （数值分析）(Some of the more classic examples of MATLAB gui interface, it makes sense for GUI programming guide (Numerical Analysis))

this matlab function displaye four potential field plots showin reaction and attraction force to obstacle and goal locations repectively .

可以具体地实现光栅衍射的衍射图样和强度分布，对衍射的研究有很大的帮助。(Can specifically diffraction grating diffraction pattern and intensity distribution of diffraction studies on a great help.)

说明：  学会不同搜索法（最速下降法，共轭梯度法，牛顿法，拟牛顿法）的计算步骤(Learn the calculation steps of different search methods (steepest descent method, conjugate gradient method, Newton method, quasi Newton method))

利用EM算法结合颜色直方图的目标跟踪，利用EM算法实时更新颜色直方图(Using EM algorithm combines the color histogram for target tracking, real-time updates using EM algorithm color histogram)

matlab 扩展编程，何强何英主编，一本很好的matlab 学习教程！(matlab expand program， heqiang heying， matlab study tutorial！)

迎风格式求解poisson方程及方程的精确解，矩形区域，狄利克雷边界情况！(Upwind scheme for solving poisson equation and exact solutions of equations, rectangular area, Dirichlet boundary conditions!)