J_UNIWARD_matlab

该代码为利用几何不变矩提取图像几何特征的代码，用matlab编写，提取7个Hu矩为特征向量。可以用于基于内容的图像检索(The code for the image using the geometric moment invariant geometric features extracted code, written with matlab to extract seven Hu moments as features. Can be used for content-based image retrieval)

画带箭头的线段。由起点指向终点。可以选择颜色，箭头粗细。m_arrow(X,Y,color1,color2,LW )用于画有箭头指向的两点间的线段 X 两点横坐标 Y两点纵坐标 color1线条颜色 color2箭头颜色 LW箭头粗度 (Draw lines with arrows)

程序用pq分解法，通过matlab进行设计来计算电力系统潮流(Program with pq decomposition method, designed to calculate the power flow through matlab)

公司最近项目做的一个DDC（数字下变频）simulink建模模型 真情奉献给大家(this is a project about digital down-converter,it is bulit with Simulink.)

内容完整且每章相对独立；是一本简明的MATLAB参考书，既适用于初学者，也适用于高级MATLAB用户。对MATLAB与FORTRAN、C等语言结合的描述更是所有MATLAB书籍中少有的一大特色。(The contents of each chapter is relatively complete and independent it is a simple MATLAB reference books, both for beginners, but also to high-level MATLAB users. Of MATLAB and FORTRAN, C and other languages with a description of all MATLAB books is a major feature of the few.)

说明：  产生长度为510的LDPC码，同时给出误码率，仅供参考。(Generated LDPC codes of length 510, the bit error rate is given for reference purposes only.)

matlab code for wavelet transform

光伏电站储能控制中蓄电池的充放电系统，希望能帮助有需要的呃人(Control of photovoltaic power plant energy storage battery charge and discharge system, hoping to help those in need Eren)

FDTD仿真，空气和玻璃界面的折射现象，可以观察到电磁波的折射现象。(A source of electric field is defined at the top edge of the spatial domain,(in glass) on the left half, which is a hard sinusoidal source, in that it does not change its value due to interference from external fields i.e in other words,the source is a perfect electric conductor. )

基于matlab的DSSS通信系统设计，有详细的文档设计以及仿真结果(Matlab-based design of a DSSS communication system, a detailed document design and simulation results)