NDLI: Derivation and comparison of SAR and frequency-wavenumber migration within a common inverse scalar wave problem formulation

Content Provider	IEEE Xplore Digital Library
Author	Gilmore, C. Jeffrey, I. LoVetri, J.
Copyright Year	1980
Abstract	Two common Fourier imaging algorithms used in ground penetrating radar (GPR), synthetic aperture radar (SAR), and frequency-wavenumber (F-K) migration, are reviewed and compared from a theoretical perspective. The two algorithms, while arising from seemingly different physical models: a point-scatterer model for SAR and the exploding source model for F-K migration, result in similar imaging equations. Both algorithms are derived from an integral equation formulation of the inverse scalar wave problem, which allows a clear understanding of the approximations being made in each algorithm and allows a direct comparison. This derivation brings out the similarities of the two techniques which are hidden by the traditional formulations based on physical scattering models. The comparison shows that the approximations required to derive each technique from the integral equation formulation of the inverse problem are nearly identical, and hence the two imaging algorithms and physical models are making similar assumptions about the solution to the inverse problem, thus clarifying why the imaging equations are so similar. Sample images of landmine-like targets buried in sand are obtained from experimental GPR data using both algorithms.
Sponsorship	IEEE Geoscience and Remote Sensing Society IEEE URSI
Starting Page	1454
Ending Page	1461
Page Count	8
File Size	666855
File Format	PDF
ISSN	01962892
Volume Number	44
Issue Number	6
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Frequency Ground penetrating radar Integral equations Inverse problems Magnetic resonance imaging Synthetic aperture radar Acoustic imaging Electromagnetic scattering Optical imaging Geophysics synthetic aperture radar (SAR) Frequency-wavenumber (F-K) migration ground penetrating radar (GPR) inverse wave problem
Content Type	Text
Resource Type	Article
Subject	Earth and Planetary Sciences Electrical and Electronic Engineering

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