학술논문
Filtrage par reconnaissance des formes d'un profil sismique vertical Vertical seismic profile filtering through the use of pattern recognition
Document Type
Report
Source
Swiss Journal of Geosciences. Sept, 2009, Vol. 102 Issue 2, p297, 10 p.
Subject
Language
English
ISSN
1661-8726
Abstract
To improve the signal to noise ratio of the vertical seismic profile recordings, we used a filtering method based on pattern recognition. It consists in recognizing along the seismic trace, corresponding to the arrivals of various events, the shape of the P wavelet considered as the training signal. This recognition is made of projections which retain only the signals similar in shape to the P wavelet, the others being attenuated according to their degree of resemblance to the training wavelet. The study undertaken on synthetic and real data shows that this method acts as an effective filter. However, it still depends on a training signal that must be well defined and identifiable.