attractors

对于Ldpc码，测试其校验矩阵H有无4环的存在，避免因为存在4环影响性能(For Ldpc code, test whether the check matrix H of the existence of loop 4, loop 4 to avoid because of the impact of performance)

1.本程序是自己刚刚接触SAR时编写的时域星载SAR点目标回波仿真，包含了卫星轨道模型、计算星目斜距时用到的各种坐标系转换、SAR回波计算模型以及简单的SAR成像模型，希望对初学者有所帮助。 2.相应的参考资料可查找《卫星轨道姿态动力学与控制》及《魏钟铨_合成孔径雷达卫星》；(1. This program is just contact with their own prepared when the time domain SAR spaceborne SAR point target echo simulation, contains the satellite orbit model, the satellite project when the use of a variety of slant range coordinate system conversion, SAR echo calculation model and SAR imaging model simple, want to help beginners. 2. The corresponding reference can be to find " satellite attitude and orbit dynamics and control" and " Wei Zhong Quan _ synthetic aperture radar satellites" )

根据邻接矩阵绘制图论图形。看注释使用，可以区分有向图和无向图(Draw Graph theory picture with adjstance matrix.Use it with explanatory notes.It can tell picture with direction whether or not)

canny滤波的算法，可以在matlab中实现滤波的效果(canny filter)

对经验模态分解的端点效应进行处理，本程序用镜像延拓方法(The empirical mode decomposition of the endpoint effect processing, the program uses the image extension method)

Colour Engineering Toolbox

说明：  具有遗忘因子的最小二乘算法实现的一个案例，包含了仿真模型及M文件，且M文件配有详细的注释，通俗易懂。(Least squares algorithm with forgetting factor to achieve a case, including the simulation model and the M file, and the M file with detailed notes, easy to understand.)

用matlab实现二次曲面图绘制，用来绘制曲线图(Draw a graph quadric)

对信号进行EMD分解程序，并根据相关性，去掉一些成分。(The EMD decomposition program is performed on the signal, and some components are removed according to the correlation.)

关于matlab的一些知识，希望对大家有用。(Some knowledge on matlab, I hope to be useful.)