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Onboard Processing for Data Volume Reduction in High-Resolution Wide-Swath SAR

Villano, Michelangelo and Krieger, Gerhard and Moreira, Alberto (2016) Onboard Processing for Data Volume Reduction in High-Resolution Wide-Swath SAR. IEEE Geoscience and Remote Sensing Letters, 13 (8), pp. 1173-1177. IEEE - Institute of Electrical and Electronics Engineers. doi: 10.1109/LGRS.2016.2574886. ISSN 1545-598X.

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High-resolution wide-swath (HRWS) synthetic aperture radar (SAR) systems are very attractive for the observation of dynamic processes on the Earth’s surface, but they require downlink of a huge volume of data. In order to comply with azimuth ambiguity requirements, in fact, a pulse repetition frequency (PRF) much higher than the required processed Doppler bandwidth (PBW) is often desirable. The volume of downlinked data, however, can be drastically reduced by performing Doppler filtering and decimation on-board. A finite impulse response (FIR) filter with a relatively small number of taps suffices to suppress the additional ambiguous components and to recover the original impulse response. This strategy is of special relevance for staggered SAR systems, which are typically characterized by a high oversampling factor. The proposed data reduction technique is also baseline for Tandem-L, where on-board Doppler filtering, resampling, and decimation will be jointly implemented.

Item URL in elib:https://elib.dlr.de/104434/
Document Type:Article
Title:Onboard Processing for Data Volume Reduction in High-Resolution Wide-Swath SAR
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Villano, MichelangeloUNSPECIFIEDhttps://orcid.org/0000-0002-1769-6927UNSPECIFIED
Krieger, GerhardUNSPECIFIEDhttps://orcid.org/0000-0002-4548-0285UNSPECIFIED
Moreira, AlbertoUNSPECIFIEDhttps://orcid.org/0000-0002-3436-9653UNSPECIFIED
Date:August 2016
Journal or Publication Title:IEEE Geoscience and Remote Sensing Letters
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:pp. 1173-1177
Publisher:IEEE - Institute of Electrical and Electronics Engineers
Keywords:Synthetic aperture radar (SAR), high-resolution wide-swath (HRWS) imaging, staggered SAR, data volume reduction, finite impulse response (FIR) filter, on-board processing, Tandem-L.
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Traffic Management (old)
DLR - Research area:Transport
DLR - Program:V VM - Verkehrsmanagement
DLR - Research theme (Project):V - Vabene++ (old), R - Vorhaben Tandem-L Vorstudien (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute
Microwaves and Radar Institute > Radar Concepts
Deposited By: Villano, Dr.-Ing. Michelangelo
Deposited On:30 May 2016 07:38
Last Modified:28 Nov 2023 09:31

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