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空间谱估计中MUSIC算法基于波束空间MUSIC算法，对初学者有一定参考作用

1、掌握MATLAB优化工具箱的基本用法，对不同算法进行初步分析、比较。 2、练习实际问题的非线性最小二乘拟合。(1.Understand the basic usage of Matlab optimization tool box. Analize and Compare different algorithms. 2. Practise nonliear minimum second order fitting using practical problems.)

单纯形法，求解线性规划问题的通用方法。单纯形是美国数学家G.B.丹齐克于1947年首先提出来的。它的理论根据是：线性规划问题的可行域是 n维向量空间Rn中的多面凸集，其最优值如果存在必在该凸集的某顶点处达到。顶点所对应的可行解称为基本可行解。单纯形法的基本思想是：先找出一个基本可行解，对它进行鉴别，看是否是最优解；若不是，则按照一定法则转换到另一改进的基本可行解,再鉴别；若仍不是，则再转换,按此重复进行。因基本可行解的个数有限，故经有限次转换必能得出问题的最优解。如果问题无最优解也可用此法判别。 (Simplex method, for solving linear programming problems common method. Simplex is the American mathematician GB Danzig in 1947 first put forward. Its theory is based on: linear programming problem feasible region is n-dimensional vector space Rn convex set in the multi-faceted, and its optimal value must be if the vertices of a convex set to achieve. Feasible solution corresponding to the vertex is called a basic feasible solution. The basic idea of the simplex method is: first find a basic feasible solution, to identify it and see whether it is the optimal solution If not, switch to another according to certain rules to improve the basic feasible solution, and then identify if still No, the re-conversion, click here to repeat. Due to the limited number of basic feasible solution, it will be converted by the finite optimal solution can be reached. If the problem can also be the optimal solution method has been applied without discrimination. )

说明：  使用时打开此例题目录下pic中的图片，然后依次单击按钮“转”、“1”、“2”、“3”、“4”和“5”，就可以实现精确的车牌定位。(use this example to open directory pic of pictures, then click the button "turn", "1", "2", "3" and "4" and "5", can achieve precise positioning of the plates.)

libsvm searh forsearh for how to use it how to use it searh for how to use it (libsvm 2.8 libsvm libsvm searh for how to use it )

在计算雷达损失时，只有当目标位于天线的垂直轴线时才能得到最大天线增益，本程序给出天线辐射方向图，在不同辐射角度下天线增益情况。(In the calculation of the radar losses when, and only when the destination is located in a vertical axis of the antenna to obtain the maximum antenna gain, the procedures given in the antenna radiation pattern, the antenna gain in the different radiation angles.)

wavelet code in matlab. its representation of reading alphbets

实现矩阵的LU最大主元分解，方便快捷有效，可以查看分解过程，适合初学者(Achieve maximum principal component matrix LU decomposition, convenient and effective, you can view the decomposition process, suitable for beginners)

Poincare_phasegraph，庞克来指数谱，可以绘制一个系统的指数谱只要稍加修改(Poincare_phasegraph, punk to index the spectrum, we can draw a system of exponential spectrum as long as slightly modified)

说明：  Gerchberg–Saxton（GS）算法是一种迭代算法，用于检索通过传播函数（如傅里叶变换）相关的一对光分布（或任何其他数学上有效的分布）的相位，前提是它们在各自光学平面上的强度已知。(The algorithm is an iterative algorithm for retrieving the phase of a pair of light distributions.)