aloha_s

本文论述并设计实现了一个脱机自由手写体数字识别系统。文中首先对待识别数字的预处理进行了介绍，包括二值化、平滑滤波、规范化、细化等图像处理方法；其次，探讨了如何提取数字字符的结构特征和笔划特征，并详细地描述了知识库的构造方法；最后采用了以知识库为基础的模板匹配识别方法,并以MATLAB作为编程工具实现了具有友好的图形用户界面的自由手写体数字识别系统。实验结果表明，本方法具有较高的识别率，并具有较好的抗噪性能。(In this paper, and design implementation of a freely Offline handwritten numeral recognition system. First, identify the figure of the pre-processing treatment were introduced, including binarization, smoothing filtering, standardization, refinement, such as image processing method Secondly, to explore how to extract the structural features of characters and stroke characteristics, and described in detail Knowledge of the construction method Finally the use of a Knowledge-based template matching to identify methods and MATLAB as a programming tool to achieve with a friendly graphical user interface of freely handwritten numeral recognition system. The experimental results show that this method has higher recognition rate, and has better anti-noise performance.)

通过龙格库塔法求解长周期光纤光栅，得到其传输特性(By Runge-Kutta method to solve long-period fiber grating, by its transmission characteristics)

matlab program about optimal load flows

实现music测向，阵列信号处理中的重要算法，能够实现测量信号的波达角的程序( music direction-finding)

Computes the LMS algo..

用两种方法在SIMULINK下将线性系统由下面的常微分方程表示出来(Two methods in SIMULINK by following the linear system of ordinary differential equations that out)

阵列信号处理的几个程序，是自己找的，可以看看(array signal processing)

IIR数字滤波器的特点是h(n)为无限长序列。设计的基本思想是：模拟系统与离散系统存在着互相模仿的理论基础，所以可以让数字滤波器的特性去模仿一个模拟滤波器的特性，得到数字滤波器的H(z)，H( )之间的变换关系。设计时，先设计一个模拟滤波器的传递函数 ，然后通过s变量与z变量之间的变换关系求出数字滤波器的系统函数H(z)。(IIR digital filter is characterized by h (n) for infinitely long sequence. The basic idea of the design are: analog systems and discrete systems there is the theoretical basis of mutual imitation, so you can make the characteristics of a digital filter to imitate the characteristics of an analog filters, digital filters are H (z), H () of the the relationship between the transformation. Design, first to design a simulation of the filter transfer function, s variables and z and then transform the relationship between variables derived digital filter system function H (z).)

使用abc坐标系统转换为dq0坐标系统元件实现abc坐标系统转换为dq0坐标系统。(This block performs the abcto dq0 transformation on a set of three-phase signals.)

说明：  实现了对函数的奇偶分频的频谱分析，DFT什么的，包括了4个基础的信号处理实验代码(To achieve parity of function analysis of frequency spectrum)