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说明：  基于小波变换的图像分解与重构，实验效果明显，在matlab中实现(Based on wavelet transform image decomposition and reconstruction of the experimental effect, in Matlab)

基于matlab编写的QQ表情程序，内有说明(QQ expression program based on Matlab prepared)

本文提出了基于二维混沌映射的数字图像水印算法，混沌具有随机性、似噪声及对初始条件的极端敏感性等特点。将经过二维混沌映射置乱后的数字水印信号嵌入图像小波域的低频系数，实现了数字水印的隐蔽性、保密性和稳固性；利用二维混沌映射Arnold变换对水印信号进行置乱，不仅增强了水印信号保密性，同时有效提高了视觉上抵抗图像剪切攻击的能力(failed to translate)

用Matlab仿真turbocode的算法，即编码结构(using Matlab turbocode algorithm, namely coding structure)

关于Matlab的１００个经典例子，对学习Matlab会有很大帮助！(Matlab on the 100 classic example of learning Matlab will be of great help!)

说明：  利用时域有限差分（FDTD）仿真三维（3D）电磁波的传播，吸收边界条件为完全匹配层（PML）。(The use of finite difference time domain (FDTD) simulation of three-dimensional (3D) electromagnetic wave transmission, absorbing boundary condition for the perfectly matched layer (PML).)

Matlab Codes for PCA

自适应滤波器LMS算法的误差性能曲面和等高线，并在等高线上绘出最陡下降法和LMS迭代的轨迹曲线，配合数字信号处理2课程的学习(LMS adaptive filter algorithm for the error performance surface and contour lines and contour line drawn in the steepest descent method and the LMS iterative trajectory curve, with 2 digital signal processing courses)

说明：  一阶动态滑模控制，设计切换函数s，使切换函数与系统控制输入的一阶导数有关(S first order dynamic sliding mode control, design the switch function, make the switch function is associated with the first derivative of system control input)

现代信号处理课程中的周期图算法仿真，主要利用平滑周期图来处理的(Courses in modern signal processing algorithm simulation periodogram, smoothed periodogram using mainly to deal with)