Wind direction determination with Radarsat2 polarimetric images (Abstract/Poster in convegno)

Type

• Prodotto della ricerca (Classe)
• Abstract/Poster in convegno (Classe)

Label

• Wind direction determination with Radarsat2 polarimetric images (Abstract/Poster in convegno) (literal)

Anno

• 2010-01-01T00:00:00+01:00 (literal)

Alternative label

• STEFANO ZECCHETTO (1); FRANCESCO DE BIASIO (1); NAZZARENO PIERDICCA (2) (2010)
  Wind direction determination with Radarsat2 polarimetric images
  in URSI Commission F Microwave Signatures 2010, Firenze, Italy, 4-8 October 2010
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• STEFANO ZECCHETTO (1); FRANCESCO DE BIASIO (1); NAZZARENO PIERDICCA (2) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note

• Specialist Symposium on Microwave Remote Sensing of the Earth, Oceans, and Atmosphere & VI CeTeM-AIT Italian National Workshop on Microwave Remote Sensing. Florence, Italy 4-8 October 2010 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#descrizioneSinteticaDelProdotto

• ABSTRACT: The determination of the wind direction from the backscatter signatures in SAR images is crucial for the evaluation of the wind field, once a model converting the normalized radar cross section to wind speed is available. One of the few methods able to extract the wind direction from SAR images has been developed in past years using the two-dimensional wavelet transform (Zecchetto et al., 2002, 2008). This method, extensively applied to the Envisat ASAR Wide Swath images, has been applied to Radarsat2 full polarimetric images with the aim of understand how polarization influences the detection of the backscatter cells related to the wind direction. Since the extraction of the wind direction from SAR images still presents problems, mainly related to the SAR image quality or to the complex geophysics in the imaged scene, the objective of this investigation is to understand if polarimetry may help the determination of the wind direction. Results of the analysis of few Radarsat2 standard quad-pol images are provided. (literal)

Note

• Poster (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• (1) ISAC - CNR (2) Dipartimento di Ingegneria Elettronica Università \"La Sapienza\" di Roma (literal)

Titolo

• Wind direction determination with Radarsat2 polarimetric images (literal)

Abstract

• In SAR images of the sea surface, the determination of the wind direction is crucial for the evaluation of the associated wind speed. One of the few methods able to extract the wind direction from SAR data has been developed in past years using the twodimensional wavelet transform [1,2]. This method, extensively used with Envisat ASAR images, has been applied to Radarsat-2 fully polarimetric images, to understand if and how polarization may be used to detect the backscatter cells related to locally coherent wind cells. The interpretation of SAR images of the sea surface is still difficult, due to the complexity of the geophysics and of the interaction mechanism of electromagnetic and sea waves. This study aims investigating how polarimetry may be used in this context. (literal)

Prodotto di

• Processi di scambio e strato limite atmosferico (TA.P06.017.002) (Modulo)
• Estrazione di parametri geofisici della superficie terrestre mediante telerilevamento satellitare (TA.P06.016.012) (Modulo)
• Institute of atmospheric sciences and climate (ISAC) (Istituto)
• Climatologia dinamica (TA.P02.012.002) (Modulo)

Autore CNR

• STEFANO ZECCHETTO (Persona)
• FRANCESCO DE BIASIO (Unità di personale interno)

Incoming links:

Prodotto

• Institute of atmospheric sciences and climate (ISAC) (Istituto)
• Processi di scambio e strato limite atmosferico (TA.P06.017.002) (Modulo)
• Estrazione di parametri geofisici della superficie terrestre mediante telerilevamento satellitare (TA.P06.016.012) (Modulo)
• Climatologia dinamica (TA.P02.012.002) (Modulo)

Autore CNR di

• STEFANO ZECCHETTO (Persona)
• FRANCESCO DE BIASIO (Unità di personale interno)