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Filtering non‐stationary geophysical data with orthogonal wavelets
Author(s) -
Moreau Frédérique,
Gibert Dominique,
Saracco Ginette
Publication year - 1996
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/96gl00155
Subject(s) - wavelet , white noise , series (stratigraphy) , gaussian , geology , noise (video) , additive white gaussian noise , time series , stationary process , computer science , algorithm , geophysics , remote sensing , pattern recognition (psychology) , statistics , mathematics , artificial intelligence , physics , paleontology , quantum mechanics , image (mathematics)
A filtering method based on both orthogonal wavelet decomposition and chi‐squared statistics is proposed to clean non‐stationary signals embedded in a gaussian white noise. An application to a time series of thermistance data recorded in an underground quarry illustrates the interest of the technique.
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