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Using a Large Space-Variant Beamformer for Multistatic SAR Imaging

Kraus, Thomas and Krieger, Gerhard and Bachmann, Markus and Moreira, Alberto (2024) Using a Large Space-Variant Beamformer for Multistatic SAR Imaging. In: 15th European Conference on Synthetic Aperture Radar, EUSAR 2024. European Conference on Synthetic Aperture Radar (EUSAR), 2024-04-23 - 2024-04-26, Munich, Germany. (Submitted)

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Multistatic synthetic aperture radar (SAR) imaging is a promising candidate for future Earth observation missions. On the one hand, the multichannel concept enables high azimuth resolution while acquiring wide swathes. On the other hand, the use of many small satellites provides the benefits of cost efficient mass manufacturing and graceful degradation which reduces the effort for redundancy on the single platforms. One of the key challenges is the processing of the SAR data of many distributed channels to a single high-resolution image. Compared to single platform multichannel systems, the phase centers are no longer aligned in azimuth direction, but baselines in cross-track and line-of-sight direction are inevitable. Additionally, the sampling in along-track is also a function of the formation and the used pulse repetition frequency (PRF). Several approaches for the processing have been investigated in literature. The paper in hand investigates a beamforming approach and discusses its benefits and limitations.

Item URL in elib:https://elib.dlr.de/197948/
Document Type:Conference or Workshop Item (Speech)
Title:Using a Large Space-Variant Beamformer for Multistatic SAR Imaging
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Kraus, ThomasUNSPECIFIEDhttps://orcid.org/0000-0002-9486-7371UNSPECIFIED
Krieger, GerhardUNSPECIFIEDhttps://orcid.org/0000-0002-4548-0285UNSPECIFIED
Bachmann, MarkusUNSPECIFIEDhttps://orcid.org/0000-0002-6028-4303UNSPECIFIED
Moreira, AlbertoUNSPECIFIEDhttps://orcid.org/0000-0002-3436-9653UNSPECIFIED
Journal or Publication Title:15th European Conference on Synthetic Aperture Radar, EUSAR 2024
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:Multistatic SAR, Beamforming, Reconstruction
Event Title:European Conference on Synthetic Aperture Radar (EUSAR)
Event Location:Munich, Germany
Event Type:international Conference
Event Dates:2024-04-23 - 2024-04-26
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 - Support TerraSAR-X/TanDEM-X operations
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute > Spaceborne SAR Systems
Deposited By: Kraus, Thomas
Deposited On:16 Oct 2023 09:54
Last Modified:16 Oct 2023 09:54

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