Fully polarimetric L-band brightness temperature signatures of azimuthal permittivity patterns - measurements and model simulations

Autor: Søbjærg, Sten Shmidl, Link, Moritz, Jagdhuber, Thomas, Montzka, Carsten, Jonard, François, Dill, Stephan, Peichl, Markus, Meyer, Thomas, IEEE International Geoscience and Remote Sensing Symposium (IGARSS 2018)
Přispěvatelé: UCL - SST/ELI/ELIE - Environmental Sciences
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: IEEE Xplore digital library (IEEE/IET Electronic Library), p. 6500-6503 (2018)
Popis: L-Band microwave radiometry over land mainly focuses on observations of horizontally (H) and vertically (V) polarized brightness temperatures. However, it has been demonstrated that measurements of the full Stokes vector [1] are sensitive to additional environmental properties, e.g. azimuthal plant row orientation. Furthermore, model simulations show that also a smooth surface with a periodic permittivity pattern can cause azimuthal dependencies of the Stokes parameters. The objective of this paper is to present fully polarimetric Lband measurement results from observations of a striped wood and styrodur target, when rotated 360° in small steps. Measurement results of a striped soil and open water target are also reported. Finally, measurements are compared to model simulations, with very good agreement within the validity range of the model (stripe thickness < λ/2).
Databáze: OpenAIRE