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说明：  利用matlab实现电磁场数值方法里面的有限差分与有限元法。(Using matlab to achieve numerical method of electromagnetic field inside the finite difference and finite element method.)

返回拉普拉斯抠图矩阵，实现用matlab抠图功能(Back matting Laplacian matrix, implemented by the matting function matlab)

说明：  Image Processing... This program reads an image and produces its grey scale version.

procesado de imagen mat lab

说明：  bp算法，经过运行测试，没有问题，值得使用(bp algorithm, after running the test, no problem, it is worth using)

说明：  利用FIR滤波器设计一个低通滤波器，能够分析到电力系统中的三次谐波，要求满足如下指标：截止频率150HZ，阻带衰减≥30db(FIR filter design using a low-pass filter, to analyze the power system in the third harmonic, the requirements to meet the following indicators: cut-off frequency 150HZ, stopband attenuation ≥ 30db)

802.11B在物理层上的仿真,DBPSK调制(802.11B in the physical layer simulation, modulation DBPSK)

Matlab数字信号处理与应用源代码 各种入门级的数字信号MATLAB仿真程序的源码 详细解释 (Digital signal processing and Matlab source code for the application of a variety of entry-level digital signal source MATLAB simulation program explained in detail)

该文件包含spwm的单极性和双极性MATLAB smulink仿真，可以正确运行，载波与调制波波形清晰完美。由本人原创搭建。(This file contains the SPWM unipolar and bipolar MATLAB smulink simulation which can run correctly, carrier and modulation wave forms are perfect.)

说明：  信号x（n）=sin(2*pi*0.05*n)+2*cos(2*pi*0.12*n)+w（n），求N=365的相关函数和功率谱(Signal x (n) = sin (2 * pi * 0.05 * n) + 2 * cos (2 * pi * 0.12 * n) + W (n), the correlation function and power spectrum of n = 365 are obtained)