hough_line_dect

采用半功率法计算阻尼率，避免人工计算带来的误差(Calculated using half-power damping rate, to avoid the error caused by manual calculation)

matlab绘制狭缝，二维狭缝三维狭缝以及周期性光栅。(the matlab draw the slit, two-dimensional slit the 3D slit and periodic grating.)

学习matlab很好的一本书，书中有详细的使用说明，很值得初学者看一看(This is a good book to Learn matlab .The book includes detailed instructions for us. It is a good choice for the peopel who learn matlab for the first time.)

利用LBM方法研究圆柱绕流模拟问题，LBM即为格子玻尔兹曼方法，用微观的角度反应宏观的现象(use LBM method to simulate cylinder streaming question)

基于FFT平面相控阵天线方向图快速计算 (Figure quickly calculate FFT-based planar phased array antenna direction)

说明：  对图像分割，初始轮廓为椭圆。变化的过程中始终以椭圆为约束(For image segmentation, the initial contour is an ellipse.)

读取xml，生成结构体，比系统自带函数方便简介，实用(Read the xml generated structure)

Matlab functions implementing non-parametric local linear smoothing (LLS) for one-dimensional curve fitting: yi = f(xi) + ei for i = 1, 2, ..., n. The toolbox contains: (i) the usual LLS estimator, see e.g. [1] (ii) a jump-preserving (two-sided) LLS estimator proposed in [2] (iii) a modified version of the two-sided LLS proposed in [3].(Matlab functions implementing non-parametric local linear smoothing (LLS) for one-dimensional curve fitting: yi = f(xi)+ ei for i = 1, 2, ..., n. The toolbox contains: (i) the usual LLS estimator, see e.g. [1] (ii) a jump-preserving (two-sided) LLS estimator proposed in [2] (iii) a modified version of the two-sided LLS proposed in [3].)

生成各种声速剖面数据，包括等声速，正负梯度声速，munk剖面，对称和反对称及跃层等。(Generate a variety of sound speed profile data, including sound velocity, etc., positive sound velocity gradient, negative sound velocity gradient, munk profile, symmetric, antisymmetric, thermocline and the like.)

说明：  里面包含详细的CFAR公式推导及原理，里面的公式可以对照雷达信号处理基础一书中的第七章部分(It contains detailed derivation and principle of CFAR formula.)