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从图片中找出连同区域，保留有三个以上的圆的连同区域(Find out the connection areas, and keep areas with three or more circles)

文档中是OFDM信号的MATLAB源码，用于产生简单的ofdm信号，以供大家讨论学习。(The document is OFDM signal MATLAB source code used to generate a simple ofdm signals for our discussion to learn.)

This program calculates minimum and inner constraint and plots the ellipsoid error.This is a useful code for solving geodetic networks.

本程序是实现电力系统的故障计算程序，故障后会对导纳矩阵进行修正，很好的进行了仿真(This program is a power system fault calculation program, fault admittance matrix will be revised, a good simulation)

说明：  讲解MATLAB在数学各分支中的应用 函数和命令 应用与技巧(MATLAB in mathematics to explain the various branches of functions and commands in the application of Tips and Tricks)

一个会动的五角星,应用matlab软件编程。(A moving star，using matlab program.)

建立前馈预测控制系统，比较原始信号、前馈预测信号和反馈控制信号的特征，体现前馈预测控制的精确性，前馈因子可调。程序运行后观察示波器图形即可。(Create feedforward predictive control system to compare the original signal, the the feedforward prediction signal and the feedback control signal, characterized in, reflects fed predict the accuracy of the control, feedforward factor is adjustable. Oscilloscope graphics can be observed after the program is running.)

模拟仿真具有轨道角动量的LG模式的涡旋光，并且给出了它的相位分布图。(The vortex light of the LG mode with orbital angular momentum is simulated and its phase distribution is given.)

说明：  利用延迟-相加法对波达方向进行估计，程序简明易懂，适用于初学者。(using delayed- add method to estimate DOA, easily understandable for beginners.)

利用matlab读取libsvm的工具包，实现数据的自动分类。压缩包里有训练文件及测试文件。(Read libsvm using matlab toolkit, automatic classification of data. Compression bag has training documents and test files.)