Small scale properties of the radar backscatter from the sea surface at off nadir angles

Stefano Zecchetto; Francesco De Biasio; Nazzareno Pierdicca; Paolo Trivero

Small scale properties of the radar backscatter from the sea surface at off nadir angles

Stefano Zecchetto, Francesco De Biasio, Nazzareno Pierdicca, Paolo Trivero

Risultato della ricerca: Contributo alla conferenza › Contributo in Atti di Convegno › peer review

Abstract

The paper analyses coherent radar backscatter data from the sea surface at C-band and VV polarization, sampled at 300 Hz. The aim is to understand their usefulness in the investigation of the sea surface properties. The variability of the backscatter intensity I_bk at frequencies close to the Bragg frequency suggested a Bragg-like mechanism in the formation of the radar backscatter from patches of Bragg waves randomly distributed in the radar footprint. This led us to consider that both I_bk and the associated Doppler frequency f_d have to be computed over time intervals of O(0.1) s, the periodicity of the Bragg waves at C-band and 45 degree of incidence. Shorter time intervals would produce unrealistic estimates. This sets the lowest limit of data sampling for further research.

Lingua originale	Inglese
Pagine	2457-2459
Numero di pagine	3
Stato di pubblicazione	Pubblicato - 2001
Pubblicato esternamente	Sì
Evento	2001 International Geoscience and Remote Sensing Symposium (IGARSS 2001) - Sydney, NSW, Australia Durata: 9 lug 2001 → 13 lug 2001

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???event.eventtypes.event.conference???	2001 International Geoscience and Remote Sensing Symposium (IGARSS 2001)
Paese/Territorio	Australia
Città	Sydney, NSW
Periodo	9/07/01 → 13/07/01

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title = "Small scale properties of the radar backscatter from the sea surface at off nadir angles",

abstract = "The paper analyses coherent radar backscatter data from the sea surface at C-band and VV polarization, sampled at 300 Hz. The aim is to understand their usefulness in the investigation of the sea surface properties. The variability of the backscatter intensity Ibk at frequencies close to the Bragg frequency suggested a Bragg-like mechanism in the formation of the radar backscatter from patches of Bragg waves randomly distributed in the radar footprint. This led us to consider that both Ibk and the associated Doppler frequency fd have to be computed over time intervals of O(0.1) s, the periodicity of the Bragg waves at C-band and 45 degree of incidence. Shorter time intervals would produce unrealistic estimates. This sets the lowest limit of data sampling for further research.",

author = "Stefano Zecchetto and {De Biasio}, Francesco and Nazzareno Pierdicca and Paolo Trivero",

year = "2001",

language = "English",

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note = "2001 International Geoscience and Remote Sensing Symposium (IGARSS 2001) ; Conference date: 09-07-2001 Through 13-07-2001",

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Small scale properties of the radar backscatter from the sea surface at off nadir angles. / Zecchetto, Stefano; De Biasio, Francesco; Pierdicca, Nazzareno et al.
2001. 2457-2459 Articolo presentato al 2001 International Geoscience and Remote Sensing Symposium (IGARSS 2001), Sydney, NSW, Australia.

Risultato della ricerca: Contributo alla conferenza › Contributo in Atti di Convegno › peer review

TY - CONF

T1 - Small scale properties of the radar backscatter from the sea surface at off nadir angles

AU - Zecchetto, Stefano

AU - De Biasio, Francesco

AU - Pierdicca, Nazzareno

AU - Trivero, Paolo

PY - 2001

Y1 - 2001

N2 - The paper analyses coherent radar backscatter data from the sea surface at C-band and VV polarization, sampled at 300 Hz. The aim is to understand their usefulness in the investigation of the sea surface properties. The variability of the backscatter intensity Ibk at frequencies close to the Bragg frequency suggested a Bragg-like mechanism in the formation of the radar backscatter from patches of Bragg waves randomly distributed in the radar footprint. This led us to consider that both Ibk and the associated Doppler frequency fd have to be computed over time intervals of O(0.1) s, the periodicity of the Bragg waves at C-band and 45 degree of incidence. Shorter time intervals would produce unrealistic estimates. This sets the lowest limit of data sampling for further research.

AB - The paper analyses coherent radar backscatter data from the sea surface at C-band and VV polarization, sampled at 300 Hz. The aim is to understand their usefulness in the investigation of the sea surface properties. The variability of the backscatter intensity Ibk at frequencies close to the Bragg frequency suggested a Bragg-like mechanism in the formation of the radar backscatter from patches of Bragg waves randomly distributed in the radar footprint. This led us to consider that both Ibk and the associated Doppler frequency fd have to be computed over time intervals of O(0.1) s, the periodicity of the Bragg waves at C-band and 45 degree of incidence. Shorter time intervals would produce unrealistic estimates. This sets the lowest limit of data sampling for further research.

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T2 - 2001 International Geoscience and Remote Sensing Symposium (IGARSS 2001)

Y2 - 9 July 2001 through 13 July 2001

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Small scale properties of the radar backscatter from the sea surface at off nadir angles

Abstract

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