The detection of the land surface scattering of the signal radiated by navigation satellites may help estimating geophysical parameters such as soil moisture and vegetation biomass. In fact, the modulation of the GNSS signal and its frequency (L band) are particularly effective to sense vegetation attenuation and change of soil permittivity due to moisture. An experiment has been carried out in Italy using a GNSS reflectometer (GNSS-R) developed by STARLAB, mounted on top of a crane and looking toward a couple of agricultural fields by two downlooking antennas operating at right and left circular polarization. The data collected during the experiment have been interpreted by comparing them to the output of a theoretical simulator, with the purpose of interpreting from an electromagnetic point of view the scattering mechanisms involved in the experiment. A summary of the simulator main feature and some comparison results is presented in this paper. © 2011 IEEE.
GNSS reflections from bare and vegetated soils: Experimental validation of an end-to-end simulator / Pierdicca, Nazzareno; Leila, Guerriero; Roberto, Giusto; Marco, Brogioni; Alejandro, Egido; Nicolas, Floury. - STAMPA. - (2011), pp. 4371-4374. (Intervento presentato al convegno 2011 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2011 tenutosi a Vancouver, BC nel 24 July 2011 through 29 July 2011) [10.1109/igarss.2011.6050200].
GNSS reflections from bare and vegetated soils: Experimental validation of an end-to-end simulator
PIERDICCA, Nazzareno;
2011
Abstract
The detection of the land surface scattering of the signal radiated by navigation satellites may help estimating geophysical parameters such as soil moisture and vegetation biomass. In fact, the modulation of the GNSS signal and its frequency (L band) are particularly effective to sense vegetation attenuation and change of soil permittivity due to moisture. An experiment has been carried out in Italy using a GNSS reflectometer (GNSS-R) developed by STARLAB, mounted on top of a crane and looking toward a couple of agricultural fields by two downlooking antennas operating at right and left circular polarization. The data collected during the experiment have been interpreted by comparing them to the output of a theoretical simulator, with the purpose of interpreting from an electromagnetic point of view the scattering mechanisms involved in the experiment. A summary of the simulator main feature and some comparison results is presented in this paper. © 2011 IEEE.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
