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Spaceborne Reflector SAR Systems with Digital Beamforming

Huber, Sigurd and Younis, Marwan and Krieger, Gerhard and Patyuchenko, Anton and Moreira, Alberto (2012) Spaceborne Reflector SAR Systems with Digital Beamforming. IEEE Transactions on Aerospace and Electronic Systems, 48 (4), pp. 3473-3493. IEEE - Institute of Electrical and Electronics Engineers. ISSN 0018-9251

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Abstract

Spaceborne Synthetic Aperture Radar (SAR) imaging enters an era where increasingly short revisit times, or large swath widths, respectively, and high spatial resolutions are requested. These requirements impose contradicting constraints on conventional SAR systems using analog beamforming technology. The development for future radar satellites is therefore towards digital beamforming (DBF) systems where the analogous receiver hardware is replaced by digital components. Concerning the SAR antenna the innovative concept of a parabolic mesh reflector in conjunction with a digital feed array is becoming a promising architecture for this new SAR system generation. These antennas, already a mature technique for communication satellites, have the potential to outperform planar array antennas in terms of gain at a moderate hardware effort. This article provides a hardware concept study based on a design in X-band. Focus is put on digital beamforming algorithms adopted to the SAR case and important performance figures are derived.

Item URL in elib:https://elib.dlr.de/69906/
Document Type:Article
Title:Spaceborne Reflector SAR Systems with Digital Beamforming
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Huber, SigurdUNSPECIFIEDUNSPECIFIED
Younis, MarwanUNSPECIFIEDUNSPECIFIED
Krieger, GerhardUNSPECIFIEDUNSPECIFIED
Patyuchenko, AntonUNSPECIFIEDUNSPECIFIED
Moreira, AlbertoUNSPECIFIEDUNSPECIFIED
Date:8 October 2012
Journal or Publication Title:IEEE Transactions on Aerospace and Electronic Systems
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:48
Page Range:pp. 3473-3493
Publisher:IEEE - Institute of Electrical and Electronics Engineers
ISSN:0018-9251
Status:Published
Keywords:DBF, reflector antennas, SAR
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 - Vorhaben hochauflösende Fernerkundungsverfahreen (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute > Radar Concepts
Deposited By: Huber, Sigurd
Deposited On:30 May 2011 12:05
Last Modified:06 Sep 2019 15:20

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