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An extraction method of weak low-frequency magnetic communication signals based on multisensor
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نویسنده
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huang c. ,xu x. ,liu d. ,zhu w. ,zhang x. ,fang g.
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منبع
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journal of electrical and computer engineering - 2015 - دوره : 2015 - شماره : 0
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چکیده
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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. © 2015 chao huang et al.
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آدرس
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key laboratory of electromagnetic radiation and detection technology,chinese academy of sciences,north 4th ring road west,haidian district,beijing,china,graduate university,chinese academy of sciences,no. 19a,yuquan road, China, key laboratory of electromagnetic radiation and detection technology,chinese academy of sciences,north 4th ring road west,haidian district, China, key laboratory of electromagnetic radiation and detection technology,chinese academy of sciences,north 4th ring road west,haidian district,beijing,china,graduate university,chinese academy of sciences,no. 19a,yuquan road, China, key laboratory of electromagnetic radiation and detection technology,chinese academy of sciences,north 4th ring road west,haidian district, China, key laboratory of electromagnetic radiation and detection technology,chinese academy of sciences,north 4th ring road west,haidian district, China, key laboratory of electromagnetic radiation and detection technology,chinese academy of sciences,north 4th ring road west,haidian district, China
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Authors
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