Signal to noise ratio enhancement using empirical wavelet transform

Noise is the unwanted energy in a seismic trace opposed to the signals corresponding to reflected energy from the subsurface features. Since it can overlap with the main signals' energy and conceal the geological information, noise attenuation is one of the most important steps in seismic data...

Full description

Main Authors: Lee, W.Y., Hamidi, R., Ghosh, D., Musa, M.H.
Format: Conference or Workshop Item
Institution: Universiti Teknologi Petronas
Record Id / ISBN-0: utp-eprints.30196 /
Published: International Petroleum Technology Conference (IPTC) 2019
Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85088405929&doi=10.2523%2fiptc-19569-ms&partnerID=40&md5=1af58ea0c874789943eebb7c1aa67480
http://eprints.utp.edu.my/30196/
Tags: Add Tag
No Tags, Be the first to tag this record!
id utp-eprints.30196
recordtype eprints
spelling utp-eprints.301962022-03-25T06:37:59Z Signal to noise ratio enhancement using empirical wavelet transform Lee, W.Y. Hamidi, R. Ghosh, D. Musa, M.H. Noise is the unwanted energy in a seismic trace opposed to the signals corresponding to reflected energy from the subsurface features. Since it can overlap with the main signals' energy and conceal the geological information, noise attenuation is one of the most important steps in seismic data processing. The most common method is frequency filtering. However, due to its limitations on separating the noise from signals, this method usually results in hurting the signal. Hence, it is important to develop an alternative method that can attenuate the noise without affecting the signal. Filters based on time-frequency analysis of the data can have a better separation of the noise from signal as they maintain the time localization of events while presenting their frequency content simultaneously. One of the recent approaches to time-frequency analysis of signals is the Empirical Wavelet Transform (EWT) which provides adaptive wavelet filter bank for signal analysis. In this paper, a filter is designed based on EWT for random noise attenuation and is applied on both synthetic and real data. To evaluate the proposed filter performance, its results are compared with the filters based on Short Time Fourier Transform and Wavelet transform. As the EWT filter separate different seismic features using the adaptive basis wavelets, it can attenuate the noise while preserving the signals with higher precision. © 2019, International Petroleum Technology Conference International Petroleum Technology Conference (IPTC) 2019 Conference or Workshop Item NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85088405929&doi=10.2523%2fiptc-19569-ms&partnerID=40&md5=1af58ea0c874789943eebb7c1aa67480 Lee, W.Y. and Hamidi, R. and Ghosh, D. and Musa, M.H. (2019) Signal to noise ratio enhancement using empirical wavelet transform. In: UNSPECIFIED. http://eprints.utp.edu.my/30196/
institution Universiti Teknologi Petronas
collection UTP Institutional Repository
description Noise is the unwanted energy in a seismic trace opposed to the signals corresponding to reflected energy from the subsurface features. Since it can overlap with the main signals' energy and conceal the geological information, noise attenuation is one of the most important steps in seismic data processing. The most common method is frequency filtering. However, due to its limitations on separating the noise from signals, this method usually results in hurting the signal. Hence, it is important to develop an alternative method that can attenuate the noise without affecting the signal. Filters based on time-frequency analysis of the data can have a better separation of the noise from signal as they maintain the time localization of events while presenting their frequency content simultaneously. One of the recent approaches to time-frequency analysis of signals is the Empirical Wavelet Transform (EWT) which provides adaptive wavelet filter bank for signal analysis. In this paper, a filter is designed based on EWT for random noise attenuation and is applied on both synthetic and real data. To evaluate the proposed filter performance, its results are compared with the filters based on Short Time Fourier Transform and Wavelet transform. As the EWT filter separate different seismic features using the adaptive basis wavelets, it can attenuate the noise while preserving the signals with higher precision. © 2019, International Petroleum Technology Conference
format Conference or Workshop Item
author Lee, W.Y.
Hamidi, R.
Ghosh, D.
Musa, M.H.
spellingShingle Lee, W.Y.
Hamidi, R.
Ghosh, D.
Musa, M.H.
Signal to noise ratio enhancement using empirical wavelet transform
author_sort Lee, W.Y.
title Signal to noise ratio enhancement using empirical wavelet transform
title_short Signal to noise ratio enhancement using empirical wavelet transform
title_full Signal to noise ratio enhancement using empirical wavelet transform
title_fullStr Signal to noise ratio enhancement using empirical wavelet transform
title_full_unstemmed Signal to noise ratio enhancement using empirical wavelet transform
title_sort signal to noise ratio enhancement using empirical wavelet transform
publisher International Petroleum Technology Conference (IPTC)
publishDate 2019
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85088405929&doi=10.2523%2fiptc-19569-ms&partnerID=40&md5=1af58ea0c874789943eebb7c1aa67480
http://eprints.utp.edu.my/30196/
_version_ 1741197365544484864
score 11.62408

Similar Items