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The SARSense campaign: A dataset for comparing Cand L-band SAR backscattering behavior to changes of soil and plant parameters in agricultural areas

Mengen, David and Montzka, Carsten and Brogi, Cosimo and Matveeva, Maria and Baum, Stephanie and Schüttemeyer, Dirk and Bayat, Bagher and Bogena, Heye and Coccia, Alexander and Masalias, Gerard and Graf, Verema and Jakobi, Jannis and Jonard, Francois and Ma, Yueling and Mattia, Francesco and Palmisano, Davide and Rascher, Uwe and Satalino, Giuseppe and Jagdhuber, Thomas and Fluhrer, Anke and Schumacher, Maike and Koyama, Christian and Schmidt, Marius and Vereecken, Harry (2021) The SARSense campaign: A dataset for comparing Cand L-band SAR backscattering behavior to changes of soil and plant parameters in agricultural areas. In: Proceedings of European Geosciences Union (EGU) 2021. European Geosciences Union (EGU), 19.-30. Apr. 2021, Online Veranstaltung. doi: 10.5194/egusphere-egu21-1351.

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Abstract

With the upcoming L-band Synthetic Aperture Radar (SAR) satellite mission Radar Observing System for Europe at L-band (ROSE-L) and its combination with existing C-band satellite missions such as Sentinel-1, multi-frequency SAR observations with high temporal and spatial resolution will become available. To investigate the potential for estimating soil and plant parameters, the SARSense campaign was conducted between June and August 2019 at the agricultural test site Selhausen in Germany. In this regard, we introduce a new publicly available, extensive SAR dataset and present a first analysis of C- and L-band co- and cross-polarized backscattering signals regarding their sensitivity to soil and plant parameters. The analysis includes C- and L-band airborne recordings as well as Senitnel-1 and ALOS-2 acquisitions, accompanied by in-situ soil moisture measurements and plant samplings. In addition, soil moisture was measured using cosmic-ray neutron sensing as well as unmanned aerial system (UAS) based multispectral and temperature measurements were taken during the campaign period. First analysis of the dataset revealed, that due to misalignments of corner reflectors during the SAR acquisition, temporal consistency of airborne SAR data is not given. In this regard, a scene-based, spatial analysis of backscatter behaviour from airborne SAR data was conducted, while the spaceborne SAR data enabled the analysis of temporal changes in backscatter behaviour. Focusing on root crops with radial canopy structure (sugar beet and potato) and cereal crops with elongated canopy structure (wheat, barley), the lowest correlations can be observed between backscattering signal and soil moisture, with R² values ranging below 0.35 at C-band and below 0.36 at L-band. Higher correlations can be observed focusing on vegetation water content, with R² values ranging between 0.12 and 0.64 at C-band and 0.06 and 0.64 at L-band. Regarding plant height, at C-band higher correlations with R² up to 0.55 can be seen compared to R² up to 0.36 at L-band. Looking at the individual agricultural corps in more detail, in almost all cases, the backscatter signals of C- and L-band contain a different amount of information about the soil and plant parameters, indicating that a multi-frequency approach is envisaged to disentangle soil and plant contributions to the signal and to identify specific scattering mechanisms related to the crop type, especially related to the different characteristics of root crops and cereals.

Item URL in elib:https://elib.dlr.de/141478/
Document Type:Conference or Workshop Item (Speech)
Title:The SARSense campaign: A dataset for comparing Cand L-band SAR backscattering behavior to changes of soil and plant parameters in agricultural areas
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Mengen, Davidd.mengen (at) fz-juelich.deUNSPECIFIED
Montzka, CarstenForschungszentrum JülichUNSPECIFIED
Brogi, CosimoFZ JülichUNSPECIFIED
Matveeva, MariaFZ JülichUNSPECIFIED
Baum, StephanieFZ JülichUNSPECIFIED
Schüttemeyer, DirkESAUNSPECIFIED
Bayat, BagherFZ JülichUNSPECIFIED
Bogena, HeyeFZ JülichUNSPECIFIED
Coccia, AlexanderMetasensing BVUNSPECIFIED
Masalias, GerardMetasensing BVUNSPECIFIED
Graf, VeremaFZ JülichUNSPECIFIED
Jakobi, JannisFZ JülichUNSPECIFIED
Jonard, FrancoisFZ JülichUNSPECIFIED
Ma, YuelingFZ JülichUNSPECIFIED
Mattia, FrancescoCNRUNSPECIFIED
Palmisano, DavideCNRUNSPECIFIED
Rascher, UweFZ JülichUNSPECIFIED
Satalino, GiuseppeCNRUNSPECIFIED
Jagdhuber, ThomasThomas.Jagdhuber (at) dlr.dehttps://orcid.org/0000-0002-1760-2425
Fluhrer, AnkeAnke.Fluhrer (at) dlr.dehttps://orcid.org/0000-0002-1188-5313
Schumacher, MaikeAalborg University, Geodesy and Surveying, Aalborg, DenmarkUNSPECIFIED
Koyama, ChristianTokyo Denki University, School of Science and Engineering, Tokyo, JapanUNSPECIFIED
Schmidt, MariusFZ JülichUNSPECIFIED
Vereecken, HarryForschungszentrum JülichUNSPECIFIED
Date:2021
Journal or Publication Title:Proceedings of European Geosciences Union (EGU) 2021
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
DOI :10.5194/egusphere-egu21-1351
Status:Accepted
Keywords:ROSE-L; soil moisture; plant parameters; L-band; C-band; SAR; airborne campaign
Event Title:European Geosciences Union (EGU)
Event Location:Online Veranstaltung
Event Type:international Conference
Event Dates:19.-30. Apr. 2021
Organizer:Copernicus Meetings
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 - Remote Sensing and Geo Research
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute > Reconnaissance and Security
Deposited By: Fluhrer, Anke
Deposited On:23 Mar 2021 17:16
Last Modified:23 Mar 2021 17:16

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