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dc.contributor.authorValencia Domènech, Enric
dc.contributor.authorCamps Carmona, Adriano José
dc.contributor.authorBosch Lluís, Xavier
dc.contributor.authorRodríguez Álvarez, Nereida
dc.contributor.authorRamos Pérez, Isaac
dc.contributor.authorEugenio, Francisco Javier
dc.contributor.authorMarcello, Javier
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions
dc.date.accessioned2011-10-17T13:49:42Z
dc.date.available2011-10-17T13:49:42Z
dc.date.created2011-09
dc.date.issued2011-09
dc.identifier.citationValencia, E. [et al.]. On the use of GNSS-R data to correct L-band brightness temperatures for sea-state effects: results of the ALBATROSS field experiments. "IEEE transactions on geoscience and remote sensing", Setembre 2011, vol. 49, núm. 9, p. 3225-3235.
dc.identifier.issn0196-2892
dc.identifier.urihttp://hdl.handle.net/2117/13544
dc.description.abstractSea surface salinity is a key oceanographic parameter that can be measured by means of L-band microwave radiometry. The measured brightness temperatures over the ocean are influenced by the sea state, which can entirely mask the salinity signature. Sea-state corrections parameterized in terms of wind speed and/or significant wave height have proven not to be fully satisfactory. In 2003, it was proposed to use reflectometry using navigation opportunity signals [Global Navigation Satellite System Reflectometer (GNSS-R)] for sea-state determination and correction of the measured L-band brightness temperature changes associated to the sea state. The novelty of the approach relies in the measurement of the whole Delay-Doppler Map that captures the scattering of the GNSS signals in the whole glistening zone. In this framework, the “Advanced L-BAnd emissiviTy and Reflectivity Observations of the Sea Surface” (ALBATROSS) field experiments were undertaken in 2008 and 2009, collecting an extensive data set of collocated radiometric and reflectometric measurements over the Atlantic Ocean, as well as oceanographic and meteorological data. In this paper, the experimental results and conclusions of the ALBATROSS 2009 field experiment are compiled and presented, showing the great potential of this technique to perform the necessary corrections in future salinity missions. Empirical relationships are derived among measured brightness temperature variations due to the sea-state effect and direct GNSS-R observables, and the sea surface correlation time at L1 band, a key parameter for GNSS-R data processing since it determines the maximum coherent integration time, was experimentally determined.
dc.format.extent11 p.
dc.language.isoeng
dc.publisherIEEE Press. Institute of Electrical and Electronics Engineers
dc.subjectÀrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Teledetecció
dc.subject.lcshDelay-doppler map
dc.subject.lcshGlobal navigation satellite system reflectometer
dc.subject.lcshL-band microwave radiometry
dc.subject.lcshSea surface salinity
dc.subject.lcshGNSS-R
dc.subject.lcshALBATROSS
dc.titleOn the use of GNSS-R data to correct L-band brightness temperatures for sea-state effects: results of the ALBATROSS field experiments
dc.typeArticle
dc.subject.lemacAigua de mar -- Salinitat
dc.contributor.groupUniversitat Politècnica de Catalunya. RSLAB - Grup de Recerca en Teledetecció
dc.identifier.doi10.1109/TGRS.2011.2159224
dc.description.peerreviewedPeer Reviewed
dc.rights.accessRestricted access - publisher's policy
local.identifier.drac5999324
dc.description.versionPostprint (published version)
local.citation.authorValencia, E.; Camps, A.; Bosch, X.; Rodriguez, N.; Ramos, I.; Eugenio, F.; Marcello, J.
local.citation.publicationNameIEEE transactions on geoscience and remote sensing
local.citation.volume49
local.citation.number9
local.citation.startingPage3225
local.citation.endingPage3235


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