Adaptive AR model prediction filtering for ship hydraulic pressure signal on wind wave background

In order to effectively detect ship hydraulic pressure signal from wind wave background,according to the characteristic difference between ship hydraulic pressure signal and wave noise,a convenient adaptive filter structure is deduced firstly based on AR model theory of time series,and then prediction filtering for ship hydraulic pressure signal is carried out with NFTF algorithm,obtaining obvious effect.Finally,computer simulation result shows that the proposed method gives excellent perfor mance with anti-interference of wave.