风浪背景下舰船水压场信号的自适应AR模型预测滤波

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

为了有效地从风浪背景中检测舰船水压信号,首先根据舰船水压信号和波浪噪声的特点以时间序列的AR模型理论为依据,导出一种便于实现的自适应滤波器结构,并用NFTF自适应算法实现对舰船水压信号的预测滤波,取得了明显的效果.计算机仿真实验结果表明,给出的方法对抗波浪干扰具有良好的性能.

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 performance with anti-interference of wave.