说明：  将阿尔法贝塔滤波原理使用MATLAB加以编程实现，并结合常用的工程参数设置形成一个子函数，可以在使用时方便的调用。主要应用于二维动目标跟踪。
(Alpha Beta filtering principle will be using MATLAB programming, combined with commonly used engineering parameter set to form a sub-function, you can easily call during use. Mainly used in the two-dimensional moving target tracking.)