MATLAB

This upload contains Matlab codes used in Electromagnetics Antenna problems

通过MATLAB仿真来讨论比较二元霍夫曼编码、三元霍夫曼编码以及信源扩展编码的效率，来实现霍夫曼码的优化构造(By MATLAB simulation to compare two yuan Huffman discussed, ternary Huffman coding and source coding efficiency extended to achieve optimization of Hoffman Construction Code)

实现弱信号条件下的检测，可以检测到较低信噪比条件下的信号。(weak signal decetion)

说明：  计算数组平均值，以求平均电流，进行异步电机驱动系统逆变器故障检测(Calculate the average value of the array to get the average current and detect the fault of the inverters in the asynchronous motor drive system)

用于地震工程学中的，修正反应谱的一种方法，尝试性修正反应谱(A method to modify the earthquake response spectrum)

地球物理正演 重磁多边形模型正演，计算园的数据(Forward gravity and magnetic geophysical polygon forward modeling, data calculation park)

使用MATLAB编程，示意随机信号功率谱估计算法中的welch算法和Thomson多窗估计法MTM在估计随机信号功率谱时，参数改变对频谱图的影响。(This program indicate random signal power spectrum estimation using Welch algorithm and Thomson MTM estimation algorithm.)

matlab中关于图片低四位隐藏以及提取的源码，cover为载体图象，message为信息图象，mix为隐藏图象，msg为提取后图象(the matlab About the picture low four hidden and extract the source)

说明：  基于长记性特征的时间序列预测模型，很好用，准确度优于普通神经网络，我自己一直在用(Characteristics based on long memory time series forecasting model, the good, the accuracy is better than an ordinary neural network, I have been using)

利用smith圆图演示射频电路匹配过程，参数可调，界面良好。(Smith chart shows the use of RF matching process, adjustable parameters, the interface is good.)