Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2003/08/01 Vol. E86-ANo. 8 ;
pp. 2047-2052 Type of Manuscript: Special Section PAPER (Special Section on Digital Signal Processing) Category: Keyword: signal extraction, PCA, electromagnetic wave, ELF band, earthquake,
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2001/04/01 Vol. E84-ANo. 4 ;
pp. 1011-1016 Type of Manuscript: Special Section PAPER (Special Section on Acoustic Signal Processing) Category: Keyword: electromagnetic radiation, earthquake, ELF band,