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合成孔径雷达成像算法与实现光盘的相应资料，包括光盘数据的格式说明，读取光盘数据的Matlab程序。(This is the supporting information of the book Digital Processing of Synthetic aperture radar data algorithms and implementation , including a document which explains how to read the RADASAT data CD, and Matlab programs which are used to extract data from CD.)

可以实现机械EMD经验模态分解，提取特征量并利用神经网络进行模式识别故障类型(The empirical mode decomposition of mechanical EMD can be realized, feature quantity is extracted and neural network is used to identify the type of fault.)

说明：  用于求解带时间窗的多车场的配送路径优化问题，即vrp问题，算法是基于模拟退火算法和遗传算法的混合算法(The algorithm is a hybrid algorithm based on simulated annealing algorithm and genetic algorithm, which is used to solve the distribution path optimization problem of multi depot with time window)

matlabsimulink通信系统建模与仿真实例分析（源代码模型）对通信学习非常有用！(matlabsimulink System Modeling and simulation analysis (source code model) is very useful for communication learning!)

1.题目：数字滤波器的设计与应用 2.设计要求：利用 Matlab 软件,以复合信号分离为例,对 “数字信号处理” 课程中 的谱分析 、数字滤波器设计和信号滤波这三个过程进行了仿真实现,给出了仿真结果。 3.具体步骤： （1）构造原始信号s(t) （2）画出s(t)的频谱 （3）设计ellipse数字滤波器(IIR)，包括低通，带通，带通，并显示幅频特性 （4）用得到的滤波器进行滤波，分离出三路信号，观察时域波形和幅频特性 （5）用三路信号s1,s2,s3尝试重新合成原始信号 4.问题：为什么重新合成的信号和原信号不相等呢？谁能解释一下？谢谢,QQ:664519036( 1. Title: Digital Filter Design and Application 2. Design requirements: use of Matlab software to composite signal separation, for example, on "Digital Signal Processing" course Of the spectral analysis, digital filter design and signal filtering process carried out three Simulation, the simulation results. 3. Concrete steps: (1) construct the original signal s (t) (2) Draw s (t) of the spectrum (3) design ellipse digital filter (IIR), including low pass, band pass, band pass, and shows amplitude-frequency characteristics (4) filtering with a filter obtained by the isolation of three signals, observed time-domain waveform and frequency characteristics (5) with a three-way signal s1, s2, s3 try to re-synthesis of the original signal 4. Question: Why is re-synthesized signal and the original signal is not equal to it? Who can explain? Thank you, QQ: 664519036)

Quaternion to DirectionCosine Matrix

A MATLAB code to Solve diffusion problem 2D in Cylindrical coordinate which uses gen_mesh_cylindrical.m

2d图像去卷积，增强图像对比度，去雾算法(2d image deconvolution, image contrast enhancement, deblurring algorithm)

visual cryptography & hash funcction for data and image files

对信号进行短时傅立叶变换以及Wigner-Ville分布分析的matlab程序(The signal short-time Fourier transform and Wigner-Ville distribution analysis matlab program)