attachments

以上上传的是一个，数学建模的资料。有好东西大家一起分享哦！(above is a mathematical modeling information. Some good stuff to share with everyone!)

模型，对于利用matlab做反演研究的人来说非常方便，包含纵横波速度，密度(Model, for use matlab to do inversion is very convenient for people, including the shear wave velocity, density)

基于遗传算法的非线性方程的拟合，实现高拟合质量，不需要输入初值。(Fitting nonlinear equations based on genetic algorithms to achieve high quality fit, do not enter the initial value.)

三维 方程组matlab牛顿解法 计算方法(Newton solution of three-dimensional equations matlab calculation)

matlab圆度误差的评定算法，最小二乘法，最小包容区域法，最大外接圆法，最小内接圆法(roundness error matlab assessment algorithm, the least square method, the minimum tolerance zone method, the largest circumcircle method, the smallest within the inscribed circle method)

说明：  用相空间局部投影法对加噪混沌时间序列去噪或进行混沌序列与正弦信号的分离。(phase space with local law to increase the projector noise chaotic time series denoising or chaotic sequence with sinusoidal signal separation.)

说明：  该程序实现的了2x2的mimo系统收发。运行system程序，可看到接受端的误码率曲线，星图。(the process of the realization of the 2x2 MIMO transceiver system. Operating system procedures, we can see the receiving end of BER curves, star maps.)

说明：  能够更好的熟悉matlab开发环境，里面还配带了许多的实用程序(Better matlab familiar development environment, which is also equipped with a number of utility)

matlab的各种程序 适合初学者参考学习交流(matlab code)

三维电磁场FDTD程序(3D-FDTD_matlab)PEC边界，希望可以帮到大家。(Three-dimensional electromagnetic FDTD program (3D-FDTD_matlab) PEC boundary)