1.Introduction The features of AR Parameter Model and Wiener Filter: (1)be suitable to process stationary random signals (2)The prior statistical property knowledge for signals and noise is required (3)The parameters of filter system are fixed 22 The features of AR Parameter Model and Wiener Filter: （1）be suitable to process stationary random signals （2）The prior statistical property knowledge for signals and noise is required （3）The parameters of filter system are fixed 1. Introduction