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Provedor de dados:  ArchiMer
País:  France
Título:  Onto a Skewness Approach to the Generalized Curvature Ocean Surface Scattering Model
Autores:  Said, Faozi
Johnsen, Harald
Nouguier, Frederic
Chapron, Bertrand
Engen, Geir
Data:  2017-10
Ano:  2017
Palavras-chave:  Geophysical measurements
Radar cross section
Remote sensing
Sea surface
Surface waves
Resumo:  The generalized curvature ocean surface scattering model [general curvature model (GCM)] is extended and revisited. Two key steps are addressed in this paper, namely, a necessary sea surface spectrum undressing procedure and the inclusion of a skewness phase-related component. Normalized radar cross-section (NRCS) simulations are generated at C-band for various wind conditions, polarizations, and incidence angles. Results are compared with CMOD5.n. Although the sea surface spectrum undressing procedure is a necessary step, the overall NRCS dynamic is notably affected only in low wind conditions (<= 5 m/s). The inclusion of the skewness phase-related component makes the most impact to the NRCS dynamic where the upwind/downwind asymmetry is clearly detectable. A good agreement between the upwind/downwind asymmetry of the extended GCM and CMOD5.n is achieved for moderate winds (approximate to 5-10 m/s) and moderate incidence angles (approximate to 32 degrees -40 degrees). For low incidence angles (<26 degrees), the GCM tends to overestimate the upwind/downwind asymmetry compared with CMOD5.n.
Tipo:  Text
Idioma:  Inglês
Identificador:  http://archimer.ifremer.fr/doc/00409/52013/52725.pdf

DOI:10.1109/TGRS.2017.2715986

http://archimer.ifremer.fr/doc/00409/52013/
Editor:  Ieee-inst Electrical Electronics Engineers Inc
Formato:  application/pdf
Fonte:  Ieee Transactions On Geoscience And Remote Sensing (0196-2892) (Ieee-inst Electrical Electronics Engineers Inc), 2017-10 , Vol. 55 , N. 10 , P. 5843-5853
Direitos:  2017 IEEE. Personal use is permitted, but republication/redistribution requires IEEE permission

info:eu-repo/semantics/openAccess

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