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MirrorSAR: A Fractionated Space Transponder Concept for the Implementation of Low-Cost Multistatic SAR Missions

Krieger, Gerhard and Zonno, Mariantonietta and Mittermayer, Josef and Moreira, Alberto and Huber, Sigurd and Rodriguez-Cassola, Marc (2018) MirrorSAR: A Fractionated Space Transponder Concept for the Implementation of Low-Cost Multistatic SAR Missions. In: Proceedings of the European Conference on Synthetic Aperture Radar, EUSAR, pp. 1359-1364. VDE. European Conference on Synthetic Aperture Radar (EUSAR), 2018-06-04 - 2018-06-07, Aachen, Germany. ISBN ISBN 978-3-8007-4636-1. ISSN 2197-4403.

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This paper introduces a new fractionated radar concept that offers the potential to significantly reduce the costs of future multistatic SAR missions. The key idea is based on a radical simplification of the receiver satellites by limiting their main functionality to a kind of microwave mirror (or space transponder) which redirects the incoming radar echoes to one or more transmitters. There, the routed signals are coherently demodulated using the same local oscillator that was used before to generate the radar pulses. This MirrorSAR concept not only saves the hardware for coherent demodulation, data storage, downlink and digital control within the receiver satellite, but also avoids the need for a bidirectional phase synchronization link between the transmitter and receiver, as it is currently employed in TanDEM-X. As the requirements for the receiver satellites are significantly reduced in this approach, it becomes possible to use low-cost platforms such as those currently being developed in the NewSpace context and to scale their number without any cost explosion. This will ultimately pave the way for novel remote sensing applications like multi-baseline SAR interferometry and single-pass tomography.

Item URL in elib:https://elib.dlr.de/120573/
Document Type:Conference or Workshop Item (Speech)
Title:MirrorSAR: A Fractionated Space Transponder Concept for the Implementation of Low-Cost Multistatic SAR Missions
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Krieger, GerhardUNSPECIFIEDhttps://orcid.org/0000-0002-4548-0285UNSPECIFIED
Zonno, MariantoniettaUNSPECIFIEDhttps://orcid.org/0000-0001-9537-1899UNSPECIFIED
Mittermayer, JosefUNSPECIFIEDhttps://orcid.org/0000-0001-7238-4240UNSPECIFIED
Moreira, AlbertoUNSPECIFIEDhttps://orcid.org/0000-0002-3436-9653UNSPECIFIED
Huber, SigurdUNSPECIFIEDhttps://orcid.org/0000-0001-7097-5127UNSPECIFIED
Date:June 2018
Journal or Publication Title:Proceedings of the European Conference on Synthetic Aperture Radar, EUSAR
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Page Range:pp. 1359-1364
ISBN:ISBN 978-3-8007-4636-1
Keywords:fractionated SAR, distributed SAR, NewSpace SAR, bistatic SAR, multistatic SAR, interferometry, digital elevation model, synchronization, microwave photonics, MIMO SAR.
Event Title:European Conference on Synthetic Aperture Radar (EUSAR)
Event Location:Aachen, Germany
Event Type:international Conference
Event Dates:2018-06-04 - 2018-06-07
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 - SAR missions, R - Development of a mini-SAR
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute
Microwaves and Radar Institute > Radar Concepts
Deposited By: Krieger, Dr.-Ing. Gerhard
Deposited On:27 Jun 2018 11:52
Last Modified:25 Feb 2022 09:32

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