- Library Home /
- Search Collections /
- Open Collections /
- Browse Collections /
- UBC Faculty Research and Publications /
- Irregular sampling: from aliasing to noise
Open Collections
UBC Faculty Research and Publications
Irregular sampling: from aliasing to noise Hennenfent, Gilles; Herrmann, Felix J.
Abstract
Seismic data is often irregularly and/or sparsely sampled along spatial coordinates. We show that these acquisition geometries are not necessarily a source of adversity in order to accurately reconstruct adequately-sampled data. We use two examples to illustrate that it may actually be better than equivalent regularly subsampled data. This comment was already made in earlier works by other authors. We explain this behavior by two key observations. Firstly, a noise-free underdetermined problem can be seen as a noisy well-determined problem. Secondly, regularly subsampling creates strong coherent acquisition noise (aliasing) difficult to remove unlike the noise created by irregularly subsampling that is typically weaker and Gaussian-like
Item Metadata
Title |
Irregular sampling: from aliasing to noise
|
Creator | |
Contributor | |
Publisher |
European Association of Geoscientists & Engineers
|
Date Issued |
2007
|
Description |
Seismic data is often irregularly and/or sparsely sampled along spatial coordinates. We show that these acquisition geometries are not necessarily a source of adversity in order to accurately reconstruct adequately-sampled data. We use two examples to illustrate that it may actually be better than equivalent regularly subsampled data. This comment was already made in earlier works by other authors. We explain this behavior by two key observations. Firstly, a noise-free underdetermined problem can be seen as a noisy well-determined problem. Secondly, regularly subsampling creates strong coherent acquisition noise (aliasing) difficult to remove unlike the noise created by irregularly subsampling that is typically weaker and Gaussian-like
|
Extent |
481385 bytes
|
Subject | |
Genre | |
Type | |
File Format |
application/pdf
|
Language |
eng
|
Date Available |
2008-03-08
|
Provider |
Vancouver : University of British Columbia Library
|
Rights |
All rights reserved
|
DOI |
10.14288/1.0107401
|
URI | |
Affiliation | |
Citation |
Hennenfent, Gilles, Herrmann, Felix J. 2007. Irregular sampling: from aliasing to noise. EAGE 69th Conference & Exhibition.
|
Peer Review Status |
Unreviewed
|
Scholarly Level |
Graduate; Faculty
|
Copyright Holder |
Herrmann, Felix J.
|
Aggregated Source Repository |
DSpace
|
Item Media
Item Citations and Data
Rights
All rights reserved