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realisation of time analysis using second order

in system programing programator 89isp

基于灰度的归一化匹配算法； 基于灰度的快速模板匹配算法。 (Based on the normalized intensity matching Based on Gray' s fast template matching algorithm.)

基本的多维优化算法，如最速下降法，牛顿法以及高斯牛顿法等(Basic multidimensional optimization algorithms, such as the steepest descent method, Newton method and Gauss Newton method, etc.)

基于PID控制，其仿真效果明显，能够达到预期的效果，希望以后能研究出更好的控制。(Based on PID control, the simulation results significantly, to achieve the desired results, I hope to be able to come up with better control.)

MATLAB命令汇总~便于查询~十分有用~~~~~~~~~(MATLAB command summary ~ ~ very useful to facilitate inquiries ~~~~~~~~~)

这是一个聚类程序，基于lab空间的k均值聚类程序(this is a program of k mean method,based in the lab space.)

说明：  这是国外一本经典教材附带的程序，通信系统的matlab实现，所含例子丰富(This is a classic foreign materials attached to the procedures, communications systems to achieve matlab contains abundant examples of)

多径效应的时域表示实际上就是不同路径来的信号存在随机的时延差。对于抗其它扩频信号干扰性能，及抗多址干扰性能。我们这里考虑简单的情况，只考虑一个用户干扰的情况，说明其具有抗多址干扰性能就行。(Multipath effect is actually a time domain representation of the signal path to the existence of different random time delay difference. Other spread spectrum signal for the anti-interference performance, and anti-MAI performance. Here we consider the simplest case, considering only one user interference, indicating its performance with anti-multiple access interference on the line.)

说明：  应用MATLAB的M文件编程方法过行信号频域分析。分别用矩阵运算的方法计算方波的DFS，在60的时窗宽度上方波宽度分别为5与12。并且画出x(n)和DFS(x(n))的杆状图。(Application of MATLAB M-file programming off-line signal frequency domain analysis. Were calculated using matrix calculation of square wave of DFS, in the 60' s when the window width the width of the top of wave 5 and 12, respectively. And draw the x (n) and DFS (x (n)) of the rod-shaped graph.)