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Efficient Fourier-Based Evaluation of SAR Focusing Kernels

Prats-Iraola, Pau and Rodriguez-Cassola, Marc and De Zan, Francesco and Lopez-Dekker, Paco and Scheiber, Rolf and Reigber, Andreas (2014) Efficient Fourier-Based Evaluation of SAR Focusing Kernels. In: Proceedings of European Conference on Synthetic Aperture Radar (EUSAR), pp. 181-184. VDE Verlag GmbH. European Conference on Synthetic Aperture Radar (EUSAR), 2014-06-03 - 2014-06-05, Berlin, Germany.

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Abstract

This contribution addresses the efficient evaluation of Fourier-based kernels for synthetic aperture radar (SAR) image formation. The goal is to evaluate the quality of the focused impulse response function and the residual phase errors of the kernel without having to implement the processor itself nor perform a costly point-target simulation followed by the processing. The proposed methodology is convenient for situations where the assumption of a hyperbolic range history does not hold anymore, and hence a compact analytic expression of the point target spectrum is not available. Examples where the hyperbolic range history does not apply include very high-resolution spaceborne SAR imaging or bistatic SAR imaging. The approach first computes numerically the two-dimensional (2D) spectrum of a point target and then uses the transfer function of the focusing kernel to match it, and hence obtain the impulse response function (IRF). The methodology is validated by comparing the matched IRFs with the ones obtained using point-target simulations.

Item URL in elib:https://elib.dlr.de/88470/
Document Type:Conference or Workshop Item (Speech)
Title:Efficient Fourier-Based Evaluation of SAR Focusing Kernels
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Prats-Iraola, PauUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rodriguez-Cassola, MarcUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
De Zan, FrancescoUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lopez-Dekker, PacoUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Scheiber, RolfUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Reigber, AndreasUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Date:3 June 2014
Journal or Publication Title:Proceedings of European Conference on Synthetic Aperture Radar (EUSAR)
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:pp. 181-184
Publisher:VDE Verlag GmbH
Status:Published
Keywords:Synthetic Aperture Radar, SAR processing, SAR simulation
Event Title:European Conference on Synthetic Aperture Radar (EUSAR)
Event Location:Berlin, Germany
Event Type:international Conference
Event Start Date:3 June 2014
Event End Date:5 June 2014
Organizer:VDE
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Aircraft SAR
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute
Microwaves and Radar Institute > Radar Concepts
Microwaves and Radar Institute > SAR Technology
Deposited By: Prats, Dr. Pau
Deposited On:17 Mar 2014 08:08
Last Modified:24 Apr 2024 19:54

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