calculate_protection_levelsm

《MATLAB程序设计教程》电子教案 有图形设计，数据分析等(" MATLAB Programming Guide" e-lesson plans are graphic design, data analysis, etc.)

This code shows hopfield neural network for pattern recognition.

在matlab中，基于GUI工具箱，实现了数字滤波器和均衡器的功能(A digital filter and equalizer function, GUI-based toolbox in matlab)

线性插值，反映龙格现象，不同插值点数对比(Linear interpolation, reflecting the Runge phenomenon, comparison of different interpolation points)

该程序包含了数值积分中龙格库塔方法的核心程序并能够求解动力系统中的响应(This programme contains the kenerl code of Runge-Kutta in numerical integration and can solve the response of the dynamic systems )

水声通信面临的最困难的问题是多途干扰,其中自多途引起接收信号的幅度衰落,互多途引起接收信号的码间干扰,再加上海洋环境的高噪声背景、低的载波频率、极为有限的带宽以及传输条件的时间—空间—频率变化特性,使得通信过程十分困难。此外，水声通信试验的成本高，难度大，也为水声通信研究带来挑战。 本软件对水声信道的仿真研究很有帮助，可以产生声线图，冲激响应，声速图等仿真文件，结合Matlab画图工具绘制图像，对水声信道的模拟仿真很有帮助。(The most difficult problem faced by underwater acoustic communication is multi-path interference, which since multipath fading caused by the magnitude of the received signal, and mutual inter-symbol interference caused by multipath signal reception, plus the marine environment of high background noise, low carrier frequency , very limited bandwidth and transmission conditions of time- space- frequency characteristic such that the communication process is very difficult. In addition, the high cost of underwater acoustic communication experiment, difficult, and challenges for the study of underwater acoustic communication. This software is useful for simulation study of underwater acoustic channel can produce sound chart, impulse response, sound velocity diagrams simulation files, combined with Matlab drawing tools to draw the image of underwater acoustic channel simulation helpful.)

压缩包是三个matlab源程序，用于产生自由空间路径损耗、对数距离路径损耗以及对数正态路径损耗。(Package is three matlab source, used to produce free space path loss, log distance path loss and lognormal path loss. )

用matlab的GUIDE编写的GUI界面，可以实现简易的电子琴功能。并可以实现自动播放自定义的文件乐谱。(Written by matlab' s GUIDE GUI interface, you can achieve simple keyboard functions. And can automatically play custom music files.)

MATLAB中动态潮流及其电压电流等的计算程序(The caculation code of dynamic power flow in MATLAB)

维纳滤波器的MATLAB源程序，处理高斯白噪声，对一维数据进行滤波。(Wiener filter MATLAB source, dealing with gaussian white noise, the one dimensional data filtering. )