pre3

白噪声背景下，均匀圆阵列的波束形成，并用三维形式显示出来(White noise background, the uniform circular array beamforming, and displayed three-dimensional form)

梯度下降法是最早最简单，也是最为常用的最优化方法。梯度下降法实现简单，当目标函数是凸函数时，梯度下降法的解是全局解。一般情况下，其解不保证是全局最优解，梯度下降法的速度也未必是最快的。梯度下降法的优化思想是用当前位置负梯度方向作为搜索方向，因为该方向为当前位置的最快下降方向，所以也被称为是”最速下降法“。最速下降法越接近目标值，步长越小，前进越慢。(The gradient descent method is the earliest and most simple and most commonly used optimization method. The gradient descent method is simple to realize. When the objective function is a convex function, the solution of the gradient descent method is a global solution. In general, the solution is not guaranteed to be the global optimal solution, and the gradient descent method is not necessarily the fastest. The optimization idea of gradient descent method is to use the current position negative gradient direction as the search direction, because the direction is the fastest descending direction of the current position, so it is also called the steepest descent method. The faster the slowest descent approach is closer to the target, the smaller the step, the slower the progress.)

说明：  PLS、BP、SVR代码，参数可调，修改后可用，也可为学编程的同仁提供参考。(PLS, BP, SVR codes, adjustable parameters, can be used after modification, and can also provide reference for colleagues learning programming.)

代码是根据文献思想自己编写，已经过多次试验，实现对图像处理过程中的svd分解，过程中需要调用一个omp函数，可以自己随便调用一个(The code literature thinking of their own writing, has been repeatedly test svd decomposition of image processing, the process need to call a omp function can casually call a)

线性方程组求解，全主元解法的matlab程序(The solution of linear equations, all the main element method matlab program )

This is a matlab program. It will implement the estimation and testing procedures for a Markov switching parameter model as presented in B. Hansen "The likelihood ratio test under non-standard conditions: Testing the Markov trend model of GNP."

是matlab编程风格的好文章。读者可以通过这篇文章提高自己matlab代码的书写效率(Matlab programming style is a good article. Readers of this article can improve their efficiency in writing code matlab)

雷达系统建模与仿真 using matlab 包括了脉压雷达，多普勒雷达，相控阵雷达，SAR雷达，ISAR雷达。(radar system simulation using matlab)

Least Mean Square Algorithm for Beam Forming

说明：  据理论中用于求取Jousselme证据距离案例(According to the case of Jousselme Evidence Distance in theory)