船舶照明电网电力线信道去噪方法研究

Research on denoising method of ship lighting grid power line channel

利用基于小波的去噪方法对船舶照明电网电力线信道进行去噪时,信噪比过小,去噪效果不佳。针对上述问题。提出一种基于独立分量分析的船舶照明电网电力线信道去噪方法。首先利用信号采集装置对信道中的信号进行采集,并对采集结果进行分析,然后利用独立分量分析技术对包含噪声的信道进行去噪处理。结果表明:与基于小波的去噪方法相比,基于独立分量分析的船舶照明电网电力线信道去噪方法的信噪比更大(大了6.47 d B),去噪效果更好,为信道去噪工作奠定了基础。

Based on wavelet denoising method, the signal to noise ratio(SNR) is too small and the denoising effect is not good for the ship lighting power grid channel. In view of the above problems. An independent component analysis(ICA)method for ship lighting grid power line channel denoising is proposed. First, the signal in the channel is collected by the signal acquisition device, and the acquisition results are analyzed. Then the noise-containing channel is de-noised by the independent component analysis technology. The results show that compared with the denoising method based on wavelet, the signal-to-noise ratio of the power line channel denoising method based on independent component analysis is larger(6.47 dB), and the denoising effect is better, which lays the foundation for the channel denoising.