Automatic Detection of Geomagnetic Sudden Commencement Using Lifting Wavelet Filters

Authors:
Shigeru Takano;Teruya Minamoto;Hiroki Arimura;Koichi Niijima;Toshihiko Iyemori;Tohru Araki
Affiliations:
-;-;-;-;-;-
Venue:
DS '99 Proceedings of the Second International Conference on Discovery Science
Year:
1999

Citing 2
Cited 1

Wavelets for computer graphics: theory and applications

Wavelets for computer graphics: theory and applications
Wavelets with convolution-type orthogonality conditions

IEEE Transactions on Signal Processing

Finding of Signal and Image by Integer-Type Haar Lifting Wavelet Transform

Progress in Discovery Science, Final Report of the Japanese Discovery Science Project

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Abstract

This paper proposes a method for detecting geomagnetic sudden commencement (SC) from a geomagnetic horizontal (H) component by using lifting wavelet filters. Lifting wavelet filters are biorthogonal wavelet filers containing free parameters. Our method is to learn such free parameters based on some training signals which contain the SC. The learnt wavelet filters have the feature of training signals. Applying such wavelet filters to the test signals, we can detect the time when SC phenomena occurred.