Show simple item record

dc.contributor.authorCardellach, Estel
dc.contributor.authorRius, Antonio
dc.contributor.authorMartín Neira, Manuel
dc.contributor.authorFabra Cervellera, Fran
dc.contributor.authorNogués Correig, O.
dc.contributor.authorRibó Vedrilla, Serni
dc.contributor.authorKainulainen, Juha
dc.contributor.authorCamps Carmona, Adriano José
dc.contributor.authorD'Addio, Salvatore
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions
dc.identifier.citationCardellach, E. [et al.]. Consolidating the precision of interferometric GNSS-R ocean altimetry using airborne experimental data. "IEEE transactions on geoscience and remote sensing", Agost 2014, vol. 52, núm. 8, p. 4992-5004.
dc.description.abstractThis paper revises the precision of altimetric measurements made with signals of the Global Navigation Satellite Systems (GNSS) reflected (GNSS-R) off the sea surface. In particular, we investigate the performance of two different GNSS-R techniques, referred to here as the clean-replica and interferometric approaches. The former has been used in GNSS-R campaigns since the late 1990s, while the latter has only been tested once, in 2010, from an 18-m-high bridge in static conditions and estuary waters. In 2011, we conducted an airborne experiment over the Baltic Sea at 3-km altitude to test the interferometric concept in dynamic and rougher conditions. The campaign also flew a clean-replica GNSS-R instrument with the purpose of comparing both approaches. We have analyzed with detail the data sets to extract and validate models of the noise present in both techniques. After predicting the noise models and verifying these with aircraft data, we used them to obtain the precision of altimetric measurements and to extrapolate the performance analysis to spaceborne scenarios. The main conclusions are that the suggested noise model agrees with measured data and that the GNSS-R interferometric technique is at least two times better in precision than a technique based on using a clean replica of the publicly available GPS code. This represents a factor of at least four times finer along-track resolution. A precision of 22 cm in 65-km along-track averaging should be achievable using near-nadir interferometric GNSS-R observations from a low earth orbiter.
dc.format.extent13 p.
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)
dc.subjectÀrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Teledetecció
dc.subjectÀrees temàtiques de la UPC::Enginyeria civil::Geologia::Oceanografia
dc.subject.lcshRemote sensing
dc.subject.lcshOceanography -- Equipment and supplies
dc.subject.otherGlobal Navigation Satellite Systems (GNSS)
dc.subject.otherNoise characterization
dc.subject.otherOcean altimetry
dc.subject.otherPassive reflectometry and interferometry system (PARIS)
dc.subject.otherRadio interferometry
dc.titleConsolidating the precision of interferometric GNSS-R ocean altimetry using airborne experimental data
dc.subject.lemacOceanografia -- Aparells i instruments
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)
upcommons.citation.authorCardellach, E.; Rius, A.; Martín, M.; Fabra, F.; Nogués, O.; Ribó, S.; Kainulainen, J.; Camps, A.; d'Addio, S.
upcommons.citation.publicationNameIEEE transactions on geoscience and remote sensing

Files in this item


This item appears in the following Collection(s)

Show simple item record

All rights reserved. This work is protected by the corresponding intellectual and industrial property rights. Without prejudice to any existing legal exemptions, reproduction, distribution, public communication or transformation of this work are prohibited without permission of the copyright holder