An Extraction Method of Weak Low-Frequency Magnetic Communication Signals Based on Multisensor

作者：Chao, Huang; Xin, Xu; Dunge, Liu; Wanhua, Zhu; Xiaojuan, Zhang; Guangyou, Fang

来源：Journal of Electrical and Computer Engineering, 2015, 2015: 1-8.

DOI：10.1155/2015/312347

<jats:p>It is a technical challenge to effectively remove the influence of magnetic noise from the vicinity of the receiving sensors on low-frequency magnetic communication. The traditional denoising methods are difficult to extract high-quality original signals under the condition of low SNR (the signal-to-noise ratio). In this paper, we analyze the numerical characteristics of the low-frequency magnetic field and propose the algorithms of the fast optimization of blind source separation (FOBSS) and the frequency-domain correlation extraction (FDCE). FOBSS is based on blind source separation (BSS). Signal extraction of low SNR can be implemented through FOBSS and FDCE. This signal extraction method is verified in multiple field experiments which can remove the magnetic noise by about 25 dB or more.</jats:p>

• 出版日期2015
• 单位中国科学院大学