DDE

说明：  实现信号的frft变换,傅立叶变换是将观看角度从时域转变到频域，分数阶傅立叶变换就是以观看时频面的角度去旋转时频面的坐标轴，然后再从观察频域的角度去分析信息。(The FRFT transform of signal is realized)

current in boost cover.

Some common algorithms

雷诺方程的数值解法，采用列出矩阵的形式求解(Numerical Solution of Reynolds equation, using the matrix set out in the form of solving)

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.)

matlab 本身没有箭头功能，只有梯度，梯度不能精确，这是编写的箭头功能，可以精确定位箭头三维位置(matlab function itself has no arrows, only gradient, the gradient is not accurate, it is written in the arrow function, you can pinpoint the location of the arrow D)

说明：  一个matlab mex 文件，可以用来在matlab程序中捕捉用户按下的特殊功能健：F1, ..., F12. 使用时，在你的应用程序的 KeyPressFcn的函数体里，是用wgfcnkey，根据其返回值，判断是否有功能健被按下。(a Matlab mex documents, in Matlab can be used to capture user proceedings of the special features? Kin : F1, ..., F12. When used in your application's function KeyPressFcn the body, is wgfcnkey, return value, determine whether there is any function Kin is pressed.)

很常用matlab绘图函数 帮助您绘制大多数常见的matlab函数，很方便(Matlab drawing functions are used to help you draw the most common matlab function, it is convenient)

说明：  用于合成孔径雷达成像的wk算法,成像质量要优于距离多普勒算法及线性调频变标算法。(wk algorithm of synthetic aperture radar imaging)

本人编写的QC-LDPC码的完整实现，采用阵列校验矩阵，极其简单，适合入门(A easy-to-learn source code of QC-LDPC encoder)