Geophysical Signal Denoising Using Multiple Wavelet Stacking
Laurent C. Duval · 2003
P076 GEOPHYSICAL SIGNAL DENOISING USING MULTIPLE WAVELET STACKING Abstract 1 EAGE 65th Conference & Exhibition — Stavanger Norway 2 - 5 June 2003 LAURENT DUVAL IFP 95852 Rueil-Malmaison Cedex France We propose a method for uncoherent noise removal in geophysical data. The Multiple Wavelet Stacking is based on a concurrent use of wavelet-based shrinkage and data and time-scale dependent threshold choice. Since one singular wavelet does not match all the time-varying properties of a signal the simultaneous use of several wavelets is able to lower some shrinkage shortcomings such as wavelet dependency and to further reduce the residual noises. Motivation