中文说明：给出了kalman、RLS、LMS三种自适应滤波器的仿真程序，三种滤波器都采用了80次迭代，将仿真值与理论值进行了比较
English Description：
The simulation program of Kalman filter, RLS filter and LMS filter is given. The three kinds of filters adopt 80 iterations, and the simulation value is compared with the theoretical value