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Multifrequency Subpulse SAR: Exploiting Chirp Bandwidth for an Increased Coverage

Bordoni, Federica and Krieger, Gerhard and Younis, Marwan (2018) Multifrequency Subpulse SAR: Exploiting Chirp Bandwidth for an Increased Coverage. IEEE Geoscience and Remote Sensing Letters, pp. 1-5. IEEE - Institute of Electrical and Electronics Engineers. DOI: 10.1109/LGRS.2018.2867723 ISSN 1545-598X

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Abstract

Spatial resolution and swath width are fundamental quality parameters for spaceborne synthetic aperture radar (SAR) products. They have driven the research on new spaceborne SAR system concepts in the last decades, and a new generation of SAR systems is emerging. Main feature of these future systems is the use of multiple digital channels and new SAR processing techniques. A further characteristic is that they can resort to a large radar signal bandwidth. In this paper, a novel SAR operational mode is presented, denoted as multifrequency subpulse (MFSP). The MFSP exploits the available radar signal bandwidth to increase the imaged swath extension, without the emergence of range ambiguities. The proposed approach is explained both theoretically and by a design example, based on the future German X-band SAR system, High-Resolution Wide-Swath (HRWS). Moreover, the achievable SAR imaging quality is investigated.

Item URL in elib:https://elib.dlr.de/121799/
Document Type:Article
Title:Multifrequency Subpulse SAR: Exploiting Chirp Bandwidth for an Increased Coverage
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Bordoni, FedericaFederica.Bordoni (at) dlr.dehttps://orcid.org/0000-0001-9908-8775
Krieger, GerhardGerhard.Krieger (at) dlr.dehttps://orcid.org/0000-0002-4548-0285
Younis, MarwanYounis.Marwan (at) dlr.deUNSPECIFIED
Date:October 2018
Journal or Publication Title:IEEE Geoscience and Remote Sensing Letters
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI :10.1109/LGRS.2018.2867723
Page Range:pp. 1-5
Publisher:IEEE - Institute of Electrical and Electronics Engineers
ISSN:1545-598X
Status:Published
Keywords:High-resolution wide-swath (HRWS), multichannel synthetic aperture radar (SAR), digital beamforming (DBF).
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
Deposited By: Bordoni, Dr. Federica
Deposited On:01 Oct 2018 09:18
Last Modified:31 Jul 2019 20:19

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