Semi-physical integration of scattering models for microwaves and optical wavelengths
(2018) IEEE International Geoscience and Remote Sensing Symposium (IGARSS 2018) — Location: Valencia, Spain (22.July.2018)
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- Abstract
- 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.
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Citations
Baris, I., Jagdhuber, T., Anglberger, H., Erasmi, S., & Jonard, F. (2018). Semi-physical integration of scattering models for microwaves and optical wavelengths. IEEE Xplore digital library (IEEE/IET Electronic Library), 3093-3096. https://doi.org/10.1109/IGARSS.2018.8518544 (Original work published 2018)