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Characterization of the Amazon Rainforest Backscatter for X-Band SAR Calibration Using TanDEM-X Data

Dell Amore, Luca and Bueso Bello, Jose Luis and Klenk, Patrick and Reimann, Jens and Rizzoli, Paola (2023) Characterization of the Amazon Rainforest Backscatter for X-Band SAR Calibration Using TanDEM-X Data. CEOS SAR Workshop on Calibration and Validation (CEOS SAR CalVal), 2023-10-16 - 2023-10-18, Munich, Germany.

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Abstract

The radiometric calibration of spaceborne SAR products plays a key role for ensuring a good performance of the whole end-to-end system and requires a precise knowledge of both the radar system and the illuminated target. The shape of the antenna pattern in elevation can be directly estimated by analyzing SAR detected images in presence of a flat backscatter profile in the slant range dimension. This is typically accomplished by acquiring SAR data over homogeneous distributed targets, under the assumption of isotropic scattering. This is the case of tropical rainforests, such as the Amazon and Congo forests, which have been established by the SAR community as well-known test sites for SAR calibration, thanks to their homogeneous and almost isotropic signature. Nevertheless, several studies using X- and C-band sensors have shown a slight dependency of the rainforest backscatter on the incidence angle, as well as on ground target properties and meteorological conditions. The aim of this work is to present a statistical characterization of radar backscatter at X-band over the Amazon rainforest using TanDEM-X data, and to provide insights on how to best utilize radar backscatter data in this region for SAR calibration and modeling purposes.

Item URL in elib:https://elib.dlr.de/197387/
Document Type:Conference or Workshop Item (Speech)
Title:Characterization of the Amazon Rainforest Backscatter for X-Band SAR Calibration Using TanDEM-X Data
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Dell Amore, LucaUNSPECIFIEDhttps://orcid.org/0000-0002-6731-1300146516792
Bueso Bello, Jose LuisUNSPECIFIEDhttps://orcid.org/0000-0003-3464-2186UNSPECIFIED
Klenk, PatrickUNSPECIFIEDhttps://orcid.org/0000-0002-8284-2265UNSPECIFIED
Reimann, JensUNSPECIFIEDhttps://orcid.org/0000-0002-0650-9073UNSPECIFIED
Rizzoli, PaolaUNSPECIFIEDhttps://orcid.org/0000-0001-9118-2732UNSPECIFIED
Date:2023
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Synthetic Aperture Radar (SAR), SAR Calibration, Amazon Rainforest, TanDEM-X
Event Title:CEOS SAR Workshop on Calibration and Validation (CEOS SAR CalVal)
Event Location:Munich, Germany
Event Type:international Conference
Event Start Date:16 October 2023
Event End Date:18 October 2023
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 - AI4SAR
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute > Spaceborne SAR Systems
Deposited By: Dell Amore, Luca
Deposited On:22 Sep 2023 11:53
Last Modified:24 Apr 2024 20:57

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