An innovative technique, based on a generalization of the conjugate gradient (CG) method in Banach spaces, is first proposed to enhance the spatial resolution of microwave radiometer measurements. This approach allows reducing the over-smoothing effects and the oscillations that are often present in Hilbert reconstructions and it is very effective in terms of processing time. Experiments undertaken on actual SSM/I data confirm the soundness of the proposed approach and show that CG is able to provide reconstructions similar to the conventional Landweber ones but with a significantly reduced processing time.
Conjugate gradient algorithm in Banach spaces to enhance the spatial resolution of microwave remote sensing data / Lenti, F.; Estatico, C.; Titley Peloquin, D.; Nunziata, Ferdinando; Migliaccio, Maurizio; Gratton, S.. - 2015-:(2015), pp. 1080-1083. (Intervento presentato al convegno IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2015 tenutosi a ita) [10.1109/IGARSS.2015.7325957].
Conjugate gradient algorithm in Banach spaces to enhance the spatial resolution of microwave remote sensing data
NUNZIATA, FERDINANDO;MIGLIACCIO, Maurizio;
2015
Abstract
An innovative technique, based on a generalization of the conjugate gradient (CG) method in Banach spaces, is first proposed to enhance the spatial resolution of microwave radiometer measurements. This approach allows reducing the over-smoothing effects and the oscillations that are often present in Hilbert reconstructions and it is very effective in terms of processing time. Experiments undertaken on actual SSM/I data confirm the soundness of the proposed approach and show that CG is able to provide reconstructions similar to the conventional Landweber ones but with a significantly reduced processing time.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
