Global Signal Elimination and Local Signals Enhancement from EM Radiation Waves Using Independent Component Analysis

Motoaki MOURI; Arao FUNASE; Andrzej CICHOCKI; Ichi TAKUMI; Hiroshi YASUKAWA; Masayasu HATA

doi:10.1093/ietfec/e91-a.8.1875

Special Section on Signal Processing

Global Signal Elimination and Local Signals Enhancement from EM Radiation Waves Using Independent Component Analysis

Motoaki MOURI, Arao FUNASE, Andrzej CICHOCKI, Ichi TAKUMI, Hiroshi YASUKAWA, Masayasu HATA

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Keywords: ICA, electromagnetic wave, denoising, signals enhancement, earthquake prediction

JOURNAL RESTRICTED ACCESS

2008 Volume E91.A Issue 8 Pages 1875-1882

DOI https://doi.org/10.1093/ietfec/e91-a.8.1875

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Abstract

Anomalous environmental electromagnetic (EM) radiation waves have been reported as the portents of earthquakes. Our study's goal is predicting earthquakes using EM radiation waves by detecting some anomalies. We have been measuring the Extremely Low Frequency (ELF) range EM radiation waves all over Japan. However, the recorded data contain signals unrelated to earthquakes. These signals, as noise, confound earthquake prediction efforts. In this paper, we propose an efficient method of global signal elimination and enhancement local signals using Independent Component Analysis (ICA). We evaluated the effectiveness of this method.

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