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Polarimetric Calibration using PARCs in the Presence of FR

Kim, Jun Su and Papathanassiou, Konstantinos (2021) Polarimetric Calibration using PARCs in the Presence of FR. In: Proceedings of Asia-Pacific Conference on Synthetic Aperture Radar (APSAR). Asia-Pacific Conference on Synthetic Aperture Radar (APSAR), 2021-11-01 - 2021-11-03, Bali, Indonesia. doi: 10.1109/APSAR52370.2021.9688555. ISSN 2197-4403.

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Polarimetric calibration of the space-borne lowfrequency SAR instruments rely more and more often on the use of PARCs. At lower frequencies the polarimetric calibration has to be performed in the presence of ionospheric distortions, in first line Faraday rotation (FR). The consideration of imperfect PARCs and FR in the Polarimetric calibration problem dramatically increases the dimensionality of the inversion problem making accurate inversion problematic. The numerical algorithm developed in this study is able to overcome two major challenges in the calibration of polarimetric SAR: First to resolve the ambiguity between the cross-talk induced LOS rotation and FR by estimating FR independently from the data itself; Second to deal with a non-negligible additive noise contribution by constraining the high-dimensional inversion problem using channel imbalance ratios estimated from distributed targets. The evaluation of the improvement follows.

Item URL in elib:https://elib.dlr.de/144759/
Document Type:Conference or Workshop Item (Speech)
Title:Polarimetric Calibration using PARCs in the Presence of FR
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Date:November 2021
Journal or Publication Title:Proceedings of Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:polarimetric calbration, Faraday rotation, Polarimetric SAR
Event Title:Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)
Event Location:Bali, Indonesia
Event Type:international Conference
Event Dates:2021-11-01 - 2021-11-03
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 - Polarimetric SAR Interferometry HR
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute > Radar Concepts
Deposited By: Kim, Junsu
Deposited On:25 Oct 2021 11:38
Last Modified:01 Aug 2023 14:27

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