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matlab基础教程，从最简单的程序安装开始，适合新手学习(matlab basic tutorials, from the most simple program installation begins, for beginners to learn)

将带发送数据序列映射为格雷码，相邻的码元只有一个符号不同。(mapping the deta serial into GeLei code,whose closed code only one symbol is different)

This approach has potential for major improvements in our ability to estimate the impulse response of the Earth, particularly for P waves reflected from the free surface and returned as an equivalent to the plane-wave reflection response. (This approach has potential for major improvements in our ability to estimate the impulse response of the Earth, particularly for P waves reflected from the free surface and returned as an equivalent to the plane-wave reflection response.)

数字水印技术是近年来图像保护技术研究领域的一个热点, 本文提出了一种基于小波变换的图像数字 水印嵌入算法的Matlab 实现。实验结果表明, 该算法具有较好的视觉效果和透明性。(Digital watermarking technology in recent years is to protect technology research in the field of image a hot, this paper puts forward a method based on wavelet transform is the digital image Watermark imbedding algorithm Matlab. The experimental results show that the algorithm has good visual effects and transparency. )

利用QAM调制，传送声音，还可以扩展用于传送文本和普通二进制序列(use QAM modulation, the transmission of voice, but also can be extended for the transmission of texts and the general binary sequence)

Helmholtz方程的有限元解法，可以任意加密网格剖分，求解结果用图像显示.(Helmholtz equation finite element method, you can encrypt arbitrary mesh, the image display solution results.)

基于PSO算法的PID参数优化MATLAB模型(PID parameter improve based on pso)

LMS滤波器（最小均方误差滤波器），学学习现代数字信号处理理论的人应该用的上。 (Filter LMS (minimum mean square error filter), school learning modern digital signal processing theory should be used on.)

This is the matlab simulation of Semiconverter simulation.

（1）变换模块 本模块包含两部分内容：利用 反变换规则将 坐标系下的两相电流转换成三相电流；利用间接矢量控制，得到转子角位移，公式如下（2） 电流滞环控制器(Hysteresis current controller)模块（3） 电压源型逆变器(Voltage sourse inverter,VSI)模块 （4） 变换模块（5） 感应电机(IM)模块 该感应电机模型是基于交流电机的电路方程、转矩方程以及运动方程建立起来的。该仿真模块为一个三输入、六输出的系统子模块。输入为 坐标系中定子电压，输出则是 坐标系中的转子电流和转子磁链，以及输出的转矩。（6） 电流反馈模块（7）速度控制器模块 ()