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CEBRAS: Cross Elevation Beam Range Ambiguity Suppression for High-Resolution Wide-Swath and MIMO-SAR Imaging

Krieger, Gerhard and Huber, Sigurd and Villano, Michelangelo and Younis, Marwan and Rommel, Tobias and Lopez-Dekker, Paco and Queiroz de Almeida, Felipe and Moreira, Alberto (2015) CEBRAS: Cross Elevation Beam Range Ambiguity Suppression for High-Resolution Wide-Swath and MIMO-SAR Imaging. In: IEEE International Geoscience and Remote Sensing Symposium (IGARSS), pp. 196-199. IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2015-07-26 - 2015-07-31, Milan,Italy.

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Abstract

In this paper we propose a new hybrid technique to suppress range ambiguities in spaceborne SAR systems with multiple elevation beams. First, conventional scan-on-receive (SCORE) is performed in real-time onboard the satellite by employing a set of dispersive beams that maximize the collected signal energy for each transmitted pulse. The range ambiguities are then removed in a second step by a joint processing of the signals collected by the multiple elevation beams. The suggested two-stage approach has the advantage that a more robust range ambiguity suppression, which may involve advanced nulling techniques to account for local topography as well as satellite attitude and instrument phase errors, can be performed on ground without tremendously increasing the onboard processing demands or the data downlink volume.

Item URL in elib:https://elib.dlr.de/95064/
Document Type:Conference or Workshop Item (Speech)
Title:CEBRAS: Cross Elevation Beam Range Ambiguity Suppression for High-Resolution Wide-Swath and MIMO-SAR Imaging
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Krieger, GerhardUNSPECIFIEDUNSPECIFIED
Huber, SigurdUNSPECIFIEDUNSPECIFIED
Villano, MichelangeloUNSPECIFIEDUNSPECIFIED
Younis, MarwanUNSPECIFIEDUNSPECIFIED
Rommel, TobiasUNSPECIFIEDUNSPECIFIED
Lopez-Dekker, PacoUNSPECIFIEDUNSPECIFIED
Queiroz de Almeida, FelipeUNSPECIFIEDUNSPECIFIED
Moreira, AlbertoUNSPECIFIEDUNSPECIFIED
Date:2015
Journal or Publication Title:IEEE International Geoscience and Remote Sensing Symposium (IGARSS)
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:Yes
Page Range:pp. 196-199
Status:Published
Keywords:Digital Beamforming, MIMO-SAR, High-Resolution Wide-Swath SAR Imaging, Staggered SAR
Event Title:IEEE International Geoscience and Remote Sensing Symposium (IGARSS)
Event Location:Milan,Italy
Event Type:international Conference
Event Dates:2015-07-26 - 2015-07-31
Organizer:IEEE
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben Tandem-L Vorstudien, R - Vorhaben Entwicklung eines Mini-SAR
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute > Radar Concepts
Microwaves and Radar Institute
Deposited By: Krieger, Dr.-Ing. Gerhard
Deposited On:05 Feb 2015 08:34
Last Modified:31 Jul 2019 19:51

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