The Passive Calibration of the radar altimeter consists in characterising the receiver by observing natural surfaces with known emission in the so-called noise-sensing mode. The paper focuses on the general approach undertaken to simulate the brightness temperature at the top of the atmosphere observed by the Envisat Radar Altimeter (RA-2). It is based on emissivity models for land and sea as well as atmospheric radiation models supported by a continuous flow of on-line data used as model inputs.
Passive calibration of the backscattering coefficient of the ENVISAT RA-2: Evaluation of radiative models for sea and land / Pierdicca, Nazzareno; Paolo, Castracane; Pulvirenti, Luca; Greco, Ferrazzoli; Guerriero, Schiavon; Ciotti, ; Marzano, FRANK SILVIO; Bernardini, Basili; Bonafoni,. - 6:(2002), pp. 3105-3107. (Intervento presentato al convegno IEEE International Geoscience and Remote Sensing Symposium (IGARSS 2002)/24th Canadian Symposium on Remote Sensing tenutosi a TORONTO, CANADA nel JUN 24-28, 2002).
Passive calibration of the backscattering coefficient of the ENVISAT RA-2: Evaluation of radiative models for sea and land
PIERDICCA, Nazzareno;PULVIRENTI, Luca;MARZANO, FRANK SILVIO;
2002
Abstract
The Passive Calibration of the radar altimeter consists in characterising the receiver by observing natural surfaces with known emission in the so-called noise-sensing mode. The paper focuses on the general approach undertaken to simulate the brightness temperature at the top of the atmosphere observed by the Envisat Radar Altimeter (RA-2). It is based on emissivity models for land and sea as well as atmospheric radiation models supported by a continuous flow of on-line data used as model inputs.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
