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The Cost of Opportunity for Gapless Imaging

Younis, Marwan and Queiroz de Almeida, Felipe and Huber, Sigurd and Zonno, Mariantonietta and Rodriguez Cassola, Marc and Hensley, Scott and Krieger, Gerhard (2019) The Cost of Opportunity for Gapless Imaging. In: 2019 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), pp. 1-4. IEEE. IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2019-07-28 -2019-08-02, Yokohama, Japan.

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Official URL: https://igarss2019.org/

Abstract

Utilizing digital multi-channel technology, spaceborne synthetic aperture radar instruments are capable of imaging swath widths of hundreds of kilometers at fine azimuth resolution. The main benefit follows through the extension of the trade space and the use of new digital beamforming techniques facilitated through the multi-channel instrument architecture. This is truly a quantum leap as the performance of these systems will be orders of magnitude better than current in-orbit and state-of-the art systems. One of the basic restrictions applicable to spaceborne platforms hosting both the transmitter and receiver is the ``blinding'' of the receiver during the transmit time instances, which manifests itself through imaging gaps. One of the main challenges the instrument designers are faced with, is to circumvent these gaps, requiring the use of dedicated instrument operation modes. An alternative approach is multi-beam imaging, i.e.\ to allow the gaps in the single SAR acquisition, while using an appropriate mission design for filling the blind gaps. This paper explores the trade space options for high-resolution wide-swath SAR imaging. The comparison of multi-beam and gapless imaging from an instrument design and performance point of view is elaborated.

Item URL in elib:https://elib.dlr.de/127081/
Document Type:Conference or Workshop Item (Speech)
Title:The Cost of Opportunity for Gapless Imaging
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Younis, Marwanmarwan.younis (at) dlr.dehttps://orcid.org/0000-0002-8563-7371
Queiroz de Almeida, FelipeFelipe.QueirozdeAlmeida (at) dlr.dehttps://orcid.org/0000-0001-5929-6633
Huber, SigurdSigurd.Huber (at) dlr.dehttps://orcid.org/0000-0001-7097-5127
Zonno, MariantoniettaMariantonietta.Zonno (at) dlr.dehttps://orcid.org/0000-0001-9537-1899
Rodriguez Cassola, MarcMarc.Rodriguez (at) dlr.deUNSPECIFIED
Hensley, ScottJet Propulsion Laboratory Pasadena, USAUNSPECIFIED
Krieger, GerhardGerhard.Krieger (at) dlr.dehttps://orcid.org/0000-0002-4548-0285
Date:28 July 2019
Journal or Publication Title:2019 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:No
Page Range:pp. 1-4
Publisher:IEEE
Status:Published
Keywords:SAR, Staggered SAR, Gabless Imaging, Gabs, SAR Peroformance
Event Title:IEEE International Geoscience and Remote Sensing Symposium (IGARSS)
Event Location:Yokohama, Japan
Event Type:international Conference
Event Dates:2019-07-28 -2019-08-02
Organizer:IEEE GRSS
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 Entwicklung eines Mini-SAR
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute > Radar Concepts
Deposited By: Younis, Dr.-Ing. Marwan
Deposited On:09 Apr 2019 07:19
Last Modified:16 Sep 2019 09:03

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