This work focuses on the retrieval of Titan’s dune field characteristics addressing different radar modes. The main purpose of the proposed work is to exploit a possible synergy between SAR and altimeter acquisitions modes to provide information about dune field. Cassini has performed 86 Titan flybys in which several observations of dune fields have been collected in altimetry mode. There are several cases in which SAR and altimeter have been acquired over same areas covered by dune fields, such as during T28 (SAR) and T30 (altimeter) flybys. Altimetry together with SAR data have been used to derive the rms slopes of dunes (large scale) over Fensal area, this information has been employed to calculate SAR incidence angle with respect to dunes. We extracted backscattering coefficients of bright and dark areas detected in the analyzed SAR image in order to evaluate the angular response of scattering. Through the Geometric Optics model we retrieve roughness values (small scale rms slope) for both dune bright and dark areas.
Synergy of Cassini SAR and altimeter acquisitions for the retrieval of dune field characteristics on Titan / Poggiali, Valerio; Mastrogiuseppe, Marco; Seu, Roberto; Martufi, Riccardo; Casarano, Domenico; Notarnicola, Claudia; Pasolli, Luca; Callegari, Mattia. - STAMPA. - 853608:(2012), pp. ...-.... (Intervento presentato al convegno SPIE Remote Sensing 2012 tenutosi a Edimburgo, Scozia, UK nel 24-27 Settembre 2012) [10.1117/12.978185].
Synergy of Cassini SAR and altimeter acquisitions for the retrieval of dune field characteristics on Titan
POGGIALI, VALERIO
Primo
Membro del Collaboration Group
;MASTROGIUSEPPE, MARCOMembro del Collaboration Group
;SEU, RobertoMembro del Collaboration Group
;MARTUFI, RICCARDOMembro del Collaboration Group
;
2012
Abstract
This work focuses on the retrieval of Titan’s dune field characteristics addressing different radar modes. The main purpose of the proposed work is to exploit a possible synergy between SAR and altimeter acquisitions modes to provide information about dune field. Cassini has performed 86 Titan flybys in which several observations of dune fields have been collected in altimetry mode. There are several cases in which SAR and altimeter have been acquired over same areas covered by dune fields, such as during T28 (SAR) and T30 (altimeter) flybys. Altimetry together with SAR data have been used to derive the rms slopes of dunes (large scale) over Fensal area, this information has been employed to calculate SAR incidence angle with respect to dunes. We extracted backscattering coefficients of bright and dark areas detected in the analyzed SAR image in order to evaluate the angular response of scattering. Through the Geometric Optics model we retrieve roughness values (small scale rms slope) for both dune bright and dark areas.File | Dimensione | Formato | |
---|---|---|---|
Poggiali_post-print_Synergy-of-Cassini_2012.pdf
accesso aperto
Tipologia:
Documento in Post-print (versione successiva alla peer review e accettata per la pubblicazione)
Licenza:
Tutti i diritti riservati (All rights reserved)
Dimensione
762.77 kB
Formato
Adobe PDF
|
762.77 kB | Adobe PDF |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.