In this paper, we provide a link budget analysis of the Global Navigation Satellite System-Reflectometry (GNSS-R) signal scattered off the sea surface in arbitrary viewing geometries. The study is based on a recent electromagnetic scattering two-scale model for rough surfaces, named BA-PTSM, which is able to accurately describe the microwave scattering from sea surface at any acquisition geometry, including backscattering and forward-scattering, and on a simulator that accounts for geometrical and system parameters. Comparisons with Geometrical Optics (GO), whose validity is limited to specular and quasi-specular scattering, demonstrate that a reliable simulation of GNSS-R signals in configurations other than the conventional forward-scattering one calls for scattering models more accurate than GO, e.g., BA-PTSM.
SIMULATION OF GNSS-R SIGNALS IN ARBITRARY VIEWING GEOMETRY WITH A CLOSED-FORM BISTATIC TWO-SCALE MODEL / Di Martino, G.; Di Simone, A.; Iodice, A.; Riccio, D.; Ruello, G.. - (2021), pp. 2005-2008. (Intervento presentato al convegno 2021 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2021 tenutosi a bel nel 2021) [10.1109/IGARSS47720.2021.9554743].
SIMULATION OF GNSS-R SIGNALS IN ARBITRARY VIEWING GEOMETRY WITH A CLOSED-FORM BISTATIC TWO-SCALE MODEL
Di Martino G.;Di Simone A.;Iodice A.;Riccio D.;Ruello G.
2021
Abstract
In this paper, we provide a link budget analysis of the Global Navigation Satellite System-Reflectometry (GNSS-R) signal scattered off the sea surface in arbitrary viewing geometries. The study is based on a recent electromagnetic scattering two-scale model for rough surfaces, named BA-PTSM, which is able to accurately describe the microwave scattering from sea surface at any acquisition geometry, including backscattering and forward-scattering, and on a simulator that accounts for geometrical and system parameters. Comparisons with Geometrical Optics (GO), whose validity is limited to specular and quasi-specular scattering, demonstrate that a reliable simulation of GNSS-R signals in configurations other than the conventional forward-scattering one calls for scattering models more accurate than GO, e.g., BA-PTSM.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
