Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.11851/6277
Title: ANALYSIS OF UNKNOWN VELOCITY AND TARGET OFF THE GRID PROBLEMS IN COMPRESSIVE SENSING BASED SUBSURFACE IMAGING
Authors: Tuncer, Mehmet Ali Çağrı
Gürbüz, Ali Cafer
Keywords: compressed sensing
gpr
velocity mismatch
off-grid
Issue Date: 2011
Publisher: IEEE
Source: IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP) -- MAY 22-27, 2011 -- Prague Congress Ctr, Prague, CZECH REPUBLIC
Series/Report no.: International Conference on Acoustics Speech and Signal Processing ICASSP
Abstract: Sparsity of target space in subsurface imaging problem is used within the framework of the compressive sensing (CS) theory in recent publications to decrease the data acquisition load in practical systems. The developed CS based imaging methods are based on two important assumptions; namely, that the speed of propagation in the medium is known and that potential targets are point like targets positioned at discrete spatial points. However, in most subsurface imaging problems these assumptions are not always valid. The propagation velocity may only be known approximately, and targets will generally not fall on the grid exactly. In this work, the performance of the CS based subsurface imaging methods are analyzed for the above defined problems and possible solutions are discussed.
URI: https://hdl.handle.net/20.500.11851/6277
ISBN: 978-1-4577-0539-7
ISSN: 1520-6149
Appears in Collections:Elektrik ve Elektronik Mühendisliği Bölümü / Department of Electrical & Electronics Engineering
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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