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Numerical computation of the electromagnetic bias in GNSS-R altimetry
dc.contributor.author | Ghavidel, Ali |
dc.contributor.author | Schiavulli, Domenico |
dc.contributor.author | Camps Carmona, Adriano José |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions |
dc.date.accessioned | 2016-01-21T14:03:52Z |
dc.date.available | 2016-01-21T14:03:52Z |
dc.date.issued | 2016-01-01 |
dc.identifier.citation | Ghavidel, A., Schiavulli, D., Camps, A. Numerical computation of the electromagnetic bias in GNSS-R altimetry. "IEEE transactions on geoscience and remote sensing", 01 Gener 2016, vol. 54, núm. 1, p. 489-498. |
dc.identifier.issn | 0196-2892 |
dc.identifier.uri | http://hdl.handle.net/2117/81812 |
dc.description.abstract | In radar altimetry, the electromagnetic (EM) bias is originated by the smaller reflectivity of wave crests than troughs; thus, the average sea surface height is underestimated. Bias uncertainty is currently the largest factor in altimetry error budgets. The EM bias in a bistatic forward-scattering configuration at L-band, such as in Global Navigation Satellite Systems Reflectometry (GNSS-R) altimetry, remains one of the major sources of uncertainty in the altimetry error budget. In this paper, the EM bias is computed using numerical simulations. To do so, a time-dependent synthetic non-Gaussian sea surface is created using the Pierson-Moskowitz and Elfouhaily sea surface height spectra and spreading function. The sea surface is then discretized in facets and |
dc.format.extent | 10 p. |
dc.language.iso | eng |
dc.publisher | Institute of Electrical and Electronics Engineers (IEEE) |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
dc.subject | Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Teledetecció |
dc.subject | Àrees temàtiques de la UPC::Enginyeria agroalimentària::Ciències de la terra i de la vida |
dc.subject.lcsh | Remote sensing |
dc.subject.lcsh | Altitudes -- Measurement |
dc.subject.other | Electromagnetic bias |
dc.subject.other | Global Navigation Satellite Systems-Reflectometry (GNSS-R) |
dc.subject.other | Ocean altimetry |
dc.subject.other | Scattering |
dc.subject.other | Surface tange measurements |
dc.subject.other | Sea-state bias |
dc.subject.other | Rough-surface |
dc.subject.other | Ocean surface |
dc.subject.other | Hydrodynamic modulation |
dc.subject.other | Scattering |
dc.subject.other | Waves |
dc.subject.other | Backscattering |
dc.subject.other | Satellite |
dc.subject.other | Elevation |
dc.title | Numerical computation of the electromagnetic bias in GNSS-R altimetry |
dc.type | Article |
dc.subject.lemac | Teledetecció |
dc.subject.lemac | Altituds -- Mesurament |
dc.contributor.group | Universitat Politècnica de Catalunya. RSLAB - Grup de Recerca en Teledetecció |
dc.identifier.doi | 10.1109/TGRS.2015.2460212 |
dc.description.peerreviewed | Peer Reviewed |
dc.relation.publisherversion | http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=7194801 |
dc.rights.access | Open Access |
local.identifier.drac | 17363821 |
dc.description.version | Postprint (author's final draft) |
dc.relation.projectid | info:eu-repo/grantAgreement/MICINN//AYA2011-29183-C02-01/ES/APLICACIONES AVANZADAS EN RADIO OCULTACIONES Y DISPERSOMETRIA UTILIZANDO SEÑALES GNSS Y OTRAS SEÑALES DE OPORTUNIDAD/ |
local.citation.author | Ghavidel, A.; Schiavulli, D.; Camps, A. |
local.citation.publicationName | IEEE transactions on geoscience and remote sensing |
local.citation.volume | 54 |
local.citation.number | 1 |
local.citation.startingPage | 489 |
local.citation.endingPage | 498 |
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