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Improving the Focusing Properties of SAR Processors for Wide-band and Wide-beam Low Frequency Imaging

Potsis, Athanasios and Reigber, Andreas and Mittermayer, Josef and Moreira, Alberto and Uzunoglou, Nikos (2001) Improving the Focusing Properties of SAR Processors for Wide-band and Wide-beam Low Frequency Imaging. In: Proceedings of IGARSS 2001, p. 3. Institute of Electrical and Electronics Engineers, Inc. (IEEE). IEEE 2001 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS 2001), 2001-07-09 - 2001-07-13, University of New South Wales, Sydney, Australia. ISBN 0-7803-7031-7.

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Abstract

An increasing amount of interest has been evolved in VHF/UHF SAR applications. These radars have proven to be a very powerful method for underground and obscured object detection as well as for parameter retrieval purposes. For new upcoming applications, high-resolution VHF/UHF SAR imaging is an important task, but cannot be achieved easily with conventional SAR processing techniques. A new algorithm is presented in this paper, which modifies the azimuth compression step of the Extended Chirp Scaling (ECS) algorithm [1]. It provides high azimuth resolution also for high squint or wide swath. Additionally, the effect of strong motion errors in wide-beam azimuth processing is analysed and discussed, using simulated data as well as data collected by the airborne experimental SAR system of DLR (E-SAR) in P-band. In this context, a sub-aperture approach for motion error compensation in wide-beam azimuth processing is also presented.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:Improving the Focusing Properties of SAR Processors for Wide-band and Wide-beam Low Frequency Imaging
Authors:
AuthorsInstitution or Email of Authors
Potsis, AthanasiosUNSPECIFIED
Reigber, AndreasUniversität Rennes
Mittermayer, JosefUNSPECIFIED
Moreira, AlbertoUNSPECIFIED
Uzunoglou, NikosNational Technical University of Athens
Date:July 2001
Journal or Publication Title:Proceedings of IGARSS 2001
Refereed publication:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:p. 3
Publisher:Institute of Electrical and Electronics Engineers, Inc. (IEEE)
ISBN:0-7803-7031-7
Status:Published
Keywords:SAR
Event Title:IEEE 2001 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS 2001)
Event Location:University of New South Wales, Sydney, Australia
Event Type:international Conference
Event Dates:2001-07-09 - 2001-07-13
Organizer:IEEE
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):W -- no assignement (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute
Microwaves and Radar Institute > Spaceborne SAR Systems
Deposited By: Dr.-Ing. Josef Mittermayer
Deposited On:22 Mar 2006
Last Modified:27 Apr 2009 05:04

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