duoyuanhuiguifenxi

一维等离子的FDTD的MATLAB程序，主要是等离子体光子晶体仿真。(One-dimensional FDTD plasma of the MATLAB program, mainly plasma photonic crystal simulation.)

OFDM 通信系统的几个仿真程序，对多载波的了解会更加深入(OFDM)

小波降噪、时频分析等方法，系统地研究航天电子设备多余物噪声检测过程中各操作变量和微粒物理参数对声波频谱的影响。通过单因素试验，详细分析了微粒粒径、振动力学条件中加速度和频率等3因素对声音信号频谱分布的影响规律，比较了短时傅里叶变换和小波变换的特点。该结果为进一步识别多余物微粒的参数提供了指导依据(the complexity of the material interaction and the properties of the particles themselves make the received signal difficult to analyse. This paper based on particle collision sound wave mechanism, using the methods of wavelet de-noising, time-frequency analysis and so on, this paper systematically studies the influence of various operating variables and particle physics parameters on the sound spectrum in the process of detecting the noise of aerospace electronic equipment. Through the single factor test, the influences of the three factors such as acceleration and frequency on the spectral distribution of the sound signal are analyse in detail, and the characteristics of the short-time Fourier transform and the wavelet transform are compared. The result provides a guideline for further identification of the parameters of the extraneous particles.)

说明：  遗传算法是计算数学中用于解决最佳化的搜索算法，是进化算法的一种。进化算法最初是借鉴了进化生物学中的一些现象而发展起来的，这些现象包括遗传、突变、自然选择以及杂交等。遗传算法通常实现方式为一种计算机模拟。对于一个最优化问题，一定数量的候选解（称为个体）的抽象表示（称为染色体）的种群向更好的解进化。传统上，解用二进制表示（即0和1的串），但也可以用其他表示方法。进化从完全随机个体的种群开始，之后一代一代发生。在每一代中，整个种群的适应度被评价，从当前种群中随机地选择多个个体（基于它们的适应度），通过自然选择和突变产生新的生命种群，该种群在算法的下一次迭代中成为当前种群。(Genetic algorithm (GA) is a search algorithm used to solve optimization in computational mathematics. It is one of evolutionary algorithms. Evolutionary algorithms were originally developed by borrowing phenomena in evolutionary biology, such as heredity, mutation, natural selection and hybridization. Genetic algorithms are usually implemented as a computer simulation. For an optimization problem, an abstract representation of a certain number of candidate solutions (called individuals) (called chromosomes) evolves towards a better solution. Traditionally, solutions are represented in binary (that is, strings of zeros and ones), but other representations are possible. Evolution begins with a population of completely random individuals, and it happens from generation to generation.)

两个matlab编写的经典游戏 数独和俄罗斯方块 ( MTETRIS Matlab Tetris (v1.1) To play this game, type: MTETRIS Controls (use numpad): [4] Left [5] Spin [6] Right [2] Drop alternatively, [A] Left [W] Spin [D] Right [S] Drop [Ctrl+P] Pause/Unpause During the game, use the game menu to set difficulty and to enable/disable sound effects. Only one game can run at a time. mtetris was written and tested on Matlab 5.3 (R11), but may work with as early as Matlab 4.0 without changes. )

μ律（美国标准，μ=255）pcm，包括编码、解码过程(μ-law (American Standard, μ = 255) pcm, including encoding, decoding)

采用3×3模板进行平滑滤波，去除噪声干扰(33 template smoothing filter to remove noise interference.)

用于电力系统可靠性分析的rbts6节点测试系统case文件（基于matpower平台）(Rbts test case file system for power system reliability analysis (based matpower platform))

正弦信号利用小波分析都分辨路分析的方法去除噪声，分别处理其中的高频和低频系数(Sinusoidal signals are resolved using wavelet analysis method for removing noise path analysis, which respectively deal with high frequency and low-frequency coefficients)

MATLAB实现单摆在外力矩作用下的动画 源程序代码((MATLAB a simple pendulum animation torque under the action of outside source program code))