gradient1

说明：  DE算法 经典的算法，来自于英文文献，适于研究DE算法(Simple DE algorithm )

遗传粒子群和混沌粒子群进行FIR滤波器的设计，并进行对比，滤波器可改，可寻到最优解！(Genetic particle swarm and chaotic particle swarm FIR filter design, and contrast, the filter can be changed, the hopes of finding the optimal solution!)

说明：  对非线性数据进行处理，利用多项式进行拟合(Fit the curve with mean5-3 smoothing, which can be used for friction coefficient curve and nonlinear data for fitting)

利用Peng-Robinson方程计算纯质R32p—T相图(Peng-Robinson equation using pure R32p-T phase diagram)

说明：  matlab实现的卫星轨道模拟，利用卫星轨道根数参量，通过求解开普勒方程求解卫星轨道模型(err)

pso coding in matlab

说明：  运用龙格库塔算法求解朗之万方程，进而实现随机共振系统(The use of Runge-Kutta algorithm for solving Langevin equation, and then the realization of stochastic resonance systems)

Signle side band Modulation Matlab code

matlab 基础教程，第四章，适合初学者(matlab Essentials, Chapter IV, suitable for beginners)

关于蝶形宽带微带天线的设计 索引：蝶形宽带微带天线. 设计方案 排列效率 摘要：现在提出一种基于绝缘体衬底的有限长度的宽带微带天线的设计方法。这种方法快速、对计算精度要求较低，是建立在一蝶形天线进行二等分而形成的两个梯形天线的 。首先设计出单边的梯形部分，然后制作出相同的另一部分并在其顶点处将其连接。与理论计算相比在X波段上实验测量表现得很好。其有效带宽达到10.6％。 (One approach to an antenna book starts with a discussion of how antennas radiate. Beginning with Maxwell’s equations, we derive electromagnetic waves. After that lengthy discussion, which contains a lot of mathematics, we discuss how these waves excite currents on conductors. The second half of the story is that currents radiate and produce electromagnetic waves. You may already have studied that subject, or if you wish to further your background, consult books on electromagnetics.The study of electromagnetics gives insight into the mathematics describing antenna radiation and provides the rigor to prevent mistakes. We skip the discussion of those equations and move directly to practical aspects. )