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Combined Estimation of Ionospheric Effects in SAR Images Exploiting Faraday Rotation and Autofocus

Gracheva, Valeria and Kim, Jun Su and Prats-Iraola, Pau and Scheiber, Rolf and Rodriguez-Cassola, Marc (2021) Combined Estimation of Ionospheric Effects in SAR Images Exploiting Faraday Rotation and Autofocus. IEEE Geoscience and Remote Sensing Letters, pp. 1-5. IEEE - Institute of Electrical and Electronics Engineers. doi: 10.1109/LGRS.2021.3102597. ISSN 1545-598X.

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Official URL: https://ieeexplore.ieee.org/document/9515010

Abstract

At lower frequencies, synthetic aperture radar (SAR) images can be significantly affected by ionospheric scintillations. This letter proposes an approach to estimate ionospheric artifacts in single SAR images by combining Faraday rotation (FR) estimates and autofocus methods by using a Wiener filter. This novel approach achieves superior performance compared to using these techniques independently. This improvement is demonstrated by injecting randomly simulated ionospheric phase screens into simulated point targets and airborne data adjusted to the parameters of the Biomass system.

Item URL in elib:https://elib.dlr.de/146380/
Document Type:Article
Additional Information:©2021 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE
Title:Combined Estimation of Ionospheric Effects in SAR Images Exploiting Faraday Rotation and Autofocus
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Gracheva, ValeriaValeria.Gracheva (at) dlr.deUNSPECIFIED
Kim, Jun SuJunsu.Kim (at) dlr.deUNSPECIFIED
Prats-Iraola, Paupau.prats (at) dlr.dehttps://orcid.org/0000-0002-7583-2309
Scheiber, RolfRolf.Scheiber (at) dlr.dehttps://orcid.org/0000-0002-6833-4897
Rodriguez-Cassola, Marcmarc.rodriguez (at) dlr.deUNSPECIFIED
Date:17 August 2021
Journal or Publication Title:IEEE Geoscience and Remote Sensing Letters
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI :10.1109/LGRS.2021.3102597
Page Range:pp. 1-5
Publisher:IEEE - Institute of Electrical and Electronics Engineers
ISSN:1545-598X
Status:Published
Keywords:Autofocus, Faraday rotation (FR), ionospheric scintillations, synthetic aperture radar (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 - Aircraft SAR
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute
Microwaves and Radar Institute > Radar Concepts
Microwaves and Radar Institute > SAR Technology
Deposited By: Prats, Dr. Pau
Deposited On:29 Nov 2021 13:36
Last Modified:03 Dec 2021 12:04

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