非高斯噪声背景下船舶轴频电场信号的提取

Extraction of Shaft-rate Modulated Electric Fields of a Ship Under Non-Gauss Noise

为了保证测量效果,采用窄带滤波对船舶轴频电场信号进行预处理,在此基础上,建立基于BP神经网络自适应噪声抵消系统对船舶轴频电场信号进行提取。

The narrow-band filter was applied to pre-treat the electric field signal of shaft frequency in order to ensure the measurement effect. The adaptive noise reduction system based on the neural networks and time-frequency analysis was developed to extract the electric field signal of shaft frequency of a ship.