[en] Various approaches exist to model scattering of a vegetation canopy above ground in terms of optical and radar wavelengths. Due to the different scattering properties these two spectral regions are modelled separately for visible/infrared bands and for microwave regions. The newly developed RadOptics model (RO-M) integrates these two spectral regions semi-physically into one radiative transfer (RT)-based model framework, resting on the law of Beer-Bougert-Lambert. Due to the integrative nature of RO-M, it can calculate/simulate the canopy and soil reflectances for the optical and radar spectrum using a single unified model architecture. By Applying RO-M in radar domain (ROR-M) it is shown that the observed dependence of Backscattering coefficient on Leaf Area Index (LAI), soil moisture content and frequency can be simulated consistently with results in literature. The results of the RO-M within the optical domain (ROO-M) present an equivalent trend of reflectance and band ratio values with LAI compared to studies in literature.
Disciplines :
Earth sciences & physical geography
Author, co-author :
Baris, I.; German Aerospace Center, Microwaves and Radar Institute, Wessling, Germany ; Georg-August-University Göttingen, Institute of Geography, Cartography, GIS and Remote Sensing Dept., Sweden
Jagdhuber, T.; German Aerospace Center, Microwaves and Radar Institute, Wessling, Germany
Anglberger, H.; German Aerospace Center, Microwaves and Radar Institute, Wessling, Germany
Erasmi, S.; Georg-August-University Göttingen, Institute of Geography, Cartography, GIS and Remote Sensing Dept., Sweden
Jonard, François ; Université de Liège - ULiège > Département de géographie ; Forschungszentrum Jülich GmbH, Institute of Bio- and Geosciences: Agrosphere (IBG-3), Jülich, Germany ; Université Catholique de Louvain, Earth and Life Institute, Louvain-la-Neuve, Belgium
Language :
English
Title :
Semi-physical integration of scattering models for microwaves and optical wavelengths
Publication date :
31 October 2018
Event name :
IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium
Event place :
Valencia, Spain
Event date :
22-07-2018 => 27-07-2018
Audience :
International
Main work title :
2018 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2018 - Proceedings
Publisher :
Institute of Electrical and Electronics Engineers Inc.
V. ACKNOWLEDGEMENT We are grateful to MIT for supporting this research with the MIT-Germany Seed Fund “Global Water Cycle and Environmental Monitoring using Active and Passive Satellite-based Microwave Instruments”.
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