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Betancourt Payan, Andres Felipe and Rodriguez-Cassola, Marc and Sanjuan Ferrer, Maria Jose (2026) Azimuth Sublooks for the Calibration in Low-Frequency Synthetic Aperture Radar. In: Proceedings of the European Conference on Synthetic Aperture Radar, EUSAR. European Conference on Synthetic Aperture Radar (EUSAR), 2026-06-08 - 2026-06-11, Baden-Baden, Germany. ISSN 2197-4403.
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Abstract
The quality of BIOMASS fully polarimetric P-band SAR products can be limited by signal propagation through the ionosphere and calibration residuals. In this paper, based on real BIOMASS data, we present different approaches to exploit sublooks in the Doppler spectrum and the associated squint angle diversity within the antenna beam. We present preliminary results on an autofocus implementation for data correction and on a method for estimating ionospheric irregularity heights at high latitudes. Finally, we also discuss the possibility of correcting system and mispointing errors by examining the cross-polar phases across azimuth sublooks.
| Item URL in elib: | https://elib.dlr.de/223285/ | ||||||||||||||||
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| Document Type: | Conference or Workshop Item (Speech) | ||||||||||||||||
| Title: | Azimuth Sublooks for the Calibration in Low-Frequency Synthetic Aperture Radar | ||||||||||||||||
| Authors: |
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| Date: | 2026 | ||||||||||||||||
| Journal or Publication Title: | Proceedings of the European Conference on Synthetic Aperture Radar, EUSAR | ||||||||||||||||
| Refereed publication: | Yes | ||||||||||||||||
| Open Access: | No | ||||||||||||||||
| Gold Open Access: | No | ||||||||||||||||
| In SCOPUS: | Yes | ||||||||||||||||
| In ISI Web of Science: | No | ||||||||||||||||
| ISSN: | 2197-4403 | ||||||||||||||||
| Status: | Published | ||||||||||||||||
| Keywords: | SAR, Biomass, Calibration, Ionosphere | ||||||||||||||||
| Event Title: | European Conference on Synthetic Aperture Radar (EUSAR) | ||||||||||||||||
| Event Location: | Baden-Baden, Germany | ||||||||||||||||
| Event Type: | international Conference | ||||||||||||||||
| Event Start Date: | 8 June 2026 | ||||||||||||||||
| Event End Date: | 11 June 2026 | ||||||||||||||||
| Organizer: | VDE | ||||||||||||||||
| 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 - SAR missions | ||||||||||||||||
| Location: | Oberpfaffenhofen | ||||||||||||||||
| Institutes and Institutions: | Microwaves and Radar Institute > Radar Concepts | ||||||||||||||||
| Deposited By: | Betancourt Payan, Andres Felipe | ||||||||||||||||
| Deposited On: | 17 Mar 2026 10:28 | ||||||||||||||||
| Last Modified: | 02 Jul 2026 12:17 |
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