chengxu

波束形成就是从传感器阵列重构源信号。（1）、通过增加期望信源的贡献来实现；（2）、通过抑制掉干扰源来实现。经典的波束形成需要观测方向(期望信源的方向)的知识。盲波束形成试图在没有期望信源方向信息的情况下进行信源的恢复。 波束形成技术的基本思想是：通过将各阵元输出进行加权求和，在一时间内将天线阵列波束“导向”到一个方向上，对期望信号得到最大输出功率的导向位置即给出DOA估计。 虽然阵列天线的方向图是全方向的，但阵列的输出经过加权求和后，却可以被调整到阵列接收的方向增益聚集在一个方向上，相当于形成了一个”波束”。这就是波束形成的物理意义所在。 ()

这是我能找到的最好的ＧＭＴ，对于一个初学者最好不过．(This is what I can find the best linux commands, for a beginner the better.)

说明：  实现短时傅里叶变换，并动态显示傅里叶变换的过程(Achieve short time Fourier transform and Fourier transform the process of dynamic display)

CR [1] is a promising solution to the problem of spectrum scarcity in wireless communications. The basic idea of CR is to allow secondary (unlicensed) users (SUs) to opportunistically utilize the spectrum of PUs (licensed), provided that the SU transmission do not harmfully affect the PUs. In this paper, we focus on the underlay CR approach, where the SUs access the spectrum occupied by the PUs, given that the interference they cause to the PUs is less than a certain threshold such that the Quality-of-Service (QoS) of the PUs can be ensured

estmation of doa using music alg

pso基础代码，微电网基础功能实现，简单的微网收益最大(PSO basic code,The basic functions of microgrid are realized. Simple microgrid benefits the most.)

WINNER Channel calibration

在Windows中有各种GUI对请大家学习一下这里面的知识点(There are various GUI in Windows, please learn about it on the inside of the knowledge points)

face recognition angular radial transform

判断一个函数的零点位置与各点正负，可输出效果图(A function to determine the position of each point of plus or minus zero, output renderings)