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近场声全息，里边包括全息技术的matlab程序，数据等。(Sound holographic technology, including holographic technology matlab procedures, data, etc.)

说明：  遗传算法解决旅行商问题 main.m为主程序 可修改参数(Genetic algorithm for traveling salesman problem)

说明：  16QAM载波同步的影响仿真，针对有频偏，有相偏，无频偏相偏情况下的星座图。(16QAM carrier synchronization of simulation, for a frequency offset, a phase offset, phase offset without offset under the constellation.)

PROGRAM TO SHOW THAT H1

sample assembly code for demo. sample assembly code for demo.

Metodo de Newton para resoluç ã o do sistema de 3 barras

MATLAB CODE FOR DIGITAL COMMUNICATION

BPSK与QPSK调制解调系统的Matlab仿真程序； 发送滤波器与接收滤波器均为根升余弦滚降滤波器； 信道噪声为加性高斯白噪声； 绘制BPSK与QPSK调制下的误码率与信噪比曲线图，并与理论曲线进行对比。 (BPSK and QPSK modulation and demodulation systems Matlab simulation program transmit and receive filters are root raised cosine filter roll-off filter channel noise is additive white Gaussian noise draw BER BPSK and QPSK modulation with a letter under noise ratio graph and compare with the theoretical curve.)

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.)

自由空间入射 二维高斯光束的模拟 （PML边界）(The free space incident two-dimensional analog of the Gaussian beam (PML boundary))