[en] A method of physical integration of electromagnetic (EM) interaction models is presented here to estimate the backscattering coefficient (BSC) for L-band, brightness temperature (TB) for L- and C-Band and the reflectance for visible (VIS) and near-infrared (NIR) region for dynamic vegetated terrain. The SPIN (Spectrum Invariant Interaction) model is obtained by solving vector radiative transfer (VRT) equations kernel-based and therefore for different wave interaction mechanisms. To demonstrate its application for the microwave region, the measurements during the growing cycle of corn from the Eleventh Microwave, Water, and Energy Balance Experiment (MicroWEX-11) have been used. For the optical part the results are compared with the PROSAIL model. By applying the SPIN model in the radar regime, it could be shown that the modeled backscattering coefficients (BSC) correlate strongly with the vertical polarization measurements (Pearson 0.83, R2 0.69) and are less correlated with the horizontal measurements (Pearson 0.45, R2 0.20). In addition, the modeled brightness temperatures (L- and C-band) in both polarization states are also correlated with the MicroWEX-11 measurements (L-band: Pearson 0.755, R2 0.57; C-band: Pearson 0.73, R2 0.53). Finally, the optical results are consistent with the results of other standard optical models (Pearson 0.99, R2 0.98), like PROSAIL.
Baris, I.; Microwaves and Radar Institute, German Aerospace Center, Wessling, Germany
Jagdhuber, T.; Microwaves and Radar Institute, German Aerospace Center, Wessling, Germany
Jonard, François ; Université de Liège - ULiège > Département de géographie ; Institute of Bio- and Geosciences: Agrosphere (IBG-3), Forschungszentrum Jülich GmbH, Jülich, Germany ; Université Catholique de Louvain, Earth and Life Institute, Louvain-la-Neuve, Belgium
Judge, J.; University of Florida, Center for Remote Sensing, Agricultural and Biological Engineering Department, Gainesville, United States
Anglberger, H.; Microwaves and Radar Institute, German Aerospace Center, Wessling, Germany
Dubois, Clemence; Friedrich-Schiller University Jena, Department for Earth Observation, Jena, Germany
Fluhrer, Anke; Microwaves and Radar Institute, German Aerospace Center, Wessling, Germany
Language :
English
Title :
Integrated Modeling of Active and Passive Microwaves and Passive Optical Signatures
Publication date :
July 2019
Event name :
IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium
Event place :
Yokohama, Japan
Event date :
28-07-2019 => 02-08-2019
Audience :
International
Main work title :
2019 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2019 - Proceedings
Publisher :
Institute of Electrical and Electronics Engineers Inc.
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