voicebox0406

现在通信系统中信号通过衰落信号引起的多普勒扩展程序(Now the signal communication system caused by the decline of the Doppler signal extender)

这个文件编程实现了正弦调频的频谱图分布和乔伊-威廉斯分布，通过观察我们可以看到不同时频分布算法实现的不同特点(This file programming the frequency spectrum of a sinusoidal FM distribution and Joy- Williams distribution, we can see by observing the time-frequency distribution of the different features of algorithm implementation)

2d diffusion simulation, gui in matlab

为感谢惠俊英老师的谆谆教诲，特为好奇诸君奉上水声物理--海洋传播声场模拟的一份武林秘籍！ 当好奇诸君阅毕此卷，再对照轻松跑完六份作业（六路招式），即入“水声物理”之江湖！ BELLHOP与AcousticsToolbox遵照GNU公共许可证进行分发。感谢Michael B. Porter对BELLHOP的原创，也感谢Orlando Camargo Rodríguez此份大道至简的入门秘籍。更感谢由Free Software凝聚起来的自由科学家社区。(Bellhop is a highly efficient ray tracing program, written in Fortran by Michael Porter as part of the Acoustic Toolbox (available at the website of the Ocean Acoustic Library). Bellhop is designed in order to perform two-dimensional acoustic ray tracing for a given sound speed profile c(z) or a given sound speed field c(r; z), in ocean waveguides with flat or variable absorbing boundaries. Output options include ray coordinates, travel time, amplitude, eigenrays, acoustic pressure or transmission loss (either coherent, incoherent or semi-coherent).)

说明：  遗传算法整套源程序，包括初始种群，计算适应度值，选择，交叉变异等(Genetic algorithm source code package, including the initial population, calculation of fitness value, selection, crossover and other variant)

《MATLAB及其在理工课程中的应用指南》书籍及其光盘代码内容，该书注重实践和应用，并配有源码("MATLAB and its applications in Polytechnic Course Guide" book and CD-ROM code content, the book focus on practice and application, and with a source)

直接序列扩频通信系统，快速傅里叶变换的matlab程序(Direct sequence spread spectrum communication systems, fast Fourier transform matlab program)

该功能用matlab实现的几个界面，可供新手们参考学习下哈(This feature is implemented with a few matlab interface for novices to learn under reference Ha)

matlab实现功率谱密度分析psd及详细解说(Matlab PSD power spectral density analysis and detailed explanation )

important features of leach