光线追击程序，可以对光线的传播行为进行仿真，功能强大，绘图精美，将安装包放在MATLAB子目录下并进行相应设置即可使用。-Raytracing program, you can simulate the propagation of light, powerful, beautiful graphics, the package will be installed on the MATLAB subdirectory and make the appropriate settings to us

EMD(经验模态分解)代码，安装于matlab-toolbox使用。-EMD(expirical mode decomposition)code,installed on the toolbox of matlab.

MATLAB tftb工具箱,上面有安装文件和安装说明 很好-TFTB toolbox in MATLAB, it has the installation files and installation instructions very well