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Digital Beamforming for Spaceborne ReflectorBased Synthetic Aperture Radar, Part 1 Basic Imaging Modes

Younis, Marwan and Queiroz de Almeida, Felipe and Villano, Michelangelo and Huber, Sigurd and Krieger, Gerhard and Moreira, Alberto (2021) Digital Beamforming for Spaceborne ReflectorBased Synthetic Aperture Radar, Part 1 Basic Imaging Modes. IEEE Geoscience and Remote Sensing Magazine (GRSM). IEEE - Institute of Electrical and Electronics Engineers. ISSN 2168-6831. (In Press)

[img] PDF - Postprint version (accepted manuscript)

Official URL: http://www.grss-ieee.org/publication-category/grsm/


Deployable reflector antennas illuminated by a digital feed array enable spaceborne synthetic aperture radar (SAR) systems capable to image an ultra-wide continuous swath at fine azimuth resolution. This is facilitated by the use of dedicated operation modes and by multi-dimensional digital beam-forming techniques. This paper is intended as a tutorial, where focus is put on the required on-board functionality, operational techniques, and the digital beam-forming aspects, for which a rigorous mathematical description is included. To maintain general validity, the functional implementation for the various modes is detailed, thus avoiding restricting the description to a specific realization. The reader is assumed to be familiar with the general concept of synthetic aperture radar, and otherwise referred to literature \cite{Moreira13} for a general introduction. The approach followed here is to start with a basic simple operation concept (part I) and then move to more advanced modes (part II and III) successively increasing the complexity; the mathematical description follows the same approach.

Item URL in elib:https://elib.dlr.de/134094/
Document Type:Article
Additional Information:Part 1 of a three part tutorial-like paper.
Title:Digital Beamforming for Spaceborne ReflectorBased Synthetic Aperture Radar, Part 1 Basic Imaging Modes
AuthorsInstitution or Email of AuthorsAuthor's 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
Villano, MichelangeloMichelangelo.Villano (at) dlr.dehttps://orcid.org/0000-0002-1769-6927
Huber, SigurdSigurd.Huber (at) dlr.dehttps://orcid.org/0000-0001-7097-5127
Krieger, GerhardGerhard.Krieger (at) dlr.dehttps://orcid.org/0000-0002-4548-0285
Moreira, AlbertoAlberto.Moreira (at) dlr.dehttps://orcid.org/0000-0002-3436-9653
Date:February 2021
Journal or Publication Title:IEEE Geoscience and Remote Sensing Magazine (GRSM)
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:Yes
Publisher:IEEE - Institute of Electrical and Electronics Engineers
Status:In Press
Keywords:synthetic aperture radar (SAR), digital-beam forming, reflector-based SAR
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 - Development of a mini-SAR
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute > Radar Concepts
Deposited By: Younis, Dr.-Ing. Marwan
Deposited On:17 Feb 2020 11:31
Last Modified:23 Mar 2021 17:08

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