中文说明：该程序包含st原程序和使用st变换的一个程序，st源程序需要加入matlab的toolbox下，sst程序为自己编写的应用例程，希望对初学者有帮助
English Description：
The program includes st original program and a program using ST transformation. St source program needs to be added to Matlab toolbox, and SST program is written for its own application routine, hoping to be helpful to beginners