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dc.contributor.authorHyuk, Park
dc.contributor.authorCamps Carmona, Adriano José
dc.contributor.authorValencia Domènech, Enric
dc.contributor.authorRodríguez Álvarez, Nereida
dc.contributor.authorBosch Lluís, Xavier
dc.contributor.authorRamos Pérez, Isaac
dc.contributor.authorCarrero Luengo, Hugo
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions
dc.identifier.citationPark, H., Camps, A., Valencia, E., Rodriguez, N., Bosch, X., Ramos, I., Carrero, H. Retracking considerations in spaceborne GNSS-R altimetry. "Gps solutions", Octubre 2012, vol. 16, núm. 4, p. 507-518.
dc.description.abstractThe European Space Agency Passive Reflectometry and Interferometry System In-orbit Demonstrator (IoD) aims to perform mesoscale altimetric observations by measuring the Global Navigation Satellite System (GNSS) opportunity signals reflected over the sea surface. Altimetry based on GNSS reflectometry (GNSS-R) is significantly affected by satellite motion, since it requires relatively long integration times to reduce noise. We present the impact of the satellite motion on the GNSS-R observables and the need to retrack the waveforms. By using a detailed GNSSR space mission simulator, the change of delay difference between the direct and the reflected signals during the incoherent averaging of the waveform has been investigated. Their effects on the waveform shape and the altimetric performance are presented comparing the aligned and non-aligned waveforms. Results show that the performance of spaceborne GNSS-R altimeter is seriously degraded without a proper alignment of the waveform samples.
dc.format.extent12 p.
dc.subjectÀrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica
dc.subject.lcshGlobal Positioning System
dc.subject.lcshRemote sensing
dc.subject.otherGNSS reflectometry
dc.subject.otherOcean altimetry
dc.subject.otherSatellite remote sensing
dc.subject.otherDelay compensation
dc.titleRetracking considerations in spaceborne GNSS-R altimetry
dc.subject.lemacGNSS (Sistema de navegació)
dc.contributor.groupUniversitat Politècnica de Catalunya. CTE-CRAE - Grup de Recerca en Ciències i Tecnologies de l'Espai
dc.contributor.groupUniversitat Politècnica de Catalunya. RSLAB - Grup de Recerca en Teledetecció
dc.description.peerreviewedPeer Reviewed
dc.rights.accessRestricted access - publisher's policy
dc.description.versionPostprint (published version)
local.citation.authorPark, H.; Camps, A.; Valencia, E.; Rodriguez, N.; Bosch, X.; Ramos, I.; Carrero, H.
local.citation.publicationNameGps solutions

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