music-copy.m

首先分析了瑞利衰落信道统计特性，并在此基础上给出了clarke模型，然后提出仿真方法，包括成形滤波法、jakes仿真模型及其多种改进方法，接着阐述了上述仿真模型的软件实现过程，并利用matlab进行了计算机仿真，然后给出衰落信号的仿真信号和分析结果，仿真结果证明了提出的仿真模型与理论曲线匹配度高，可以很好地模拟无线衰落信道(First analyze the statistical properties of the Rayleigh fading channel, and clarke model is given on this basis, and then asked the simulation methods, including the forming of the filter method, the the jakes simulation model and a variety of improvement, then described the simulation model of the software implementationprocess, and using matlab computer simulation, and then gives the simulated signals and analysis results of the fading signals, simulation results show the proposed simulation model with the theoretical curve to match high, can simulate the wireless fading channel)

k近邻的两种改进算法，采用matlab实现，使得算法效率有了较大提高。(two methods for knn，both of them are run in matlat.)

说明：  用matlab实现拟合的几个例子源码， ％x,y应是原始数据，下面的数据仅是为了说明问题而自设的示例数据。(Matlab fitting used to achieve a few examples of source code, x, y should be the raw data, the following data only to illustrate the problem of sample-based data.)

非线性分析 hopf分岔 一个典型的非线性hopf分岔编程实例(a Hopf bifurcation chaos in dynamic system)

异步电动机的变频调速，采用IGBT全桥逆变器(Variable-Frequency Induction Motor Drive)

HHT法国人算法中，一个谱分析时绘图的函数(French HHT algorithm, a spectral analysis of the function mapping)

用于三分类的bp算法matlab程序 下面是一个两概念（一个三角形和一个矩形）学习的例子，是一个典型的多分类例子 分类结果的正确率可通过训练网络进一步提高 (for three classification algorithm Matlab procedures bp below is a two concepts (a triangle and a Moment fractal) learning example is a typical example of multi-classification results of the correct classification rate can be further enhanced training network)

GprMax的理论基础是时域有限差分(FDTD)方法。时域有限差分方法直接将Maxwell方程作差分离散，利用二阶精度的中心差分近似把Maxwell方程中的微分算符直接转换为差分形式，在空间和时间上对电场和磁场交替间隔取样，使计算过程完全模拟电磁波逐步传播以及与目标物体相互作用的过程。(GprMax is based on the theory of the finite difference time domain (FDTD) method. The finite difference time domain method directly will Maxwell equation of discrete difference, using second order precision of the central difference in the equations are Maxwell approximate differential operator directly convert difference forms, in the space and time of electric field and magnetic field on alternate sampling interval, making the calculation process simulation electromagnetic wave propagation and completely step by step and target object interaction process. )

A New Image Filter for Impulsive Noise Based on Rough Sets

基于移相全桥控制双向DCDC变换器matlab仿真原理图，可以在此基础上加以改进(Based on the full-bridge phase-shift control bidirectional DCDC converter matlab simulation schematic, can be improved on this basis)