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Untangling the incoherent and coherent scattering components in GNSS-R and novel applications
dc.contributor.author | Muñoz Martin, Joan Francesc |
dc.contributor.author | Onrubia Ibáñez, Raúl |
dc.contributor.author | Pascual Biosca, Daniel |
dc.contributor.author | Hyuk, Park |
dc.contributor.author | Camps Carmona, Adriano José |
dc.contributor.author | Rudiger, Christoph |
dc.contributor.author | Walker, Jeffrey |
dc.contributor.author | Monerris Belda, Alessandra |
dc.contributor.other | Universitat Politècnica de Catalunya. Doctorat en Teoria del Senyal i Comunicacions |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Física |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions |
dc.date.accessioned | 2020-07-28T10:20:28Z |
dc.date.available | 2020-07-28T10:20:28Z |
dc.date.issued | 2020-04-09 |
dc.identifier.citation | Muñoz, J. [et al.]. Untangling the incoherent and coherent scattering components in GNSS-R and novel applications. "Remote sensing", 9 Abril 2020, |
dc.identifier.issn | 2072-4292 |
dc.identifier.uri | http://hdl.handle.net/2117/327845 |
dc.description.abstract | As opposed to monostatic radars where incoherent backscattering dominates, in bistatic radars, such as Global Navigation Satellite Systems Reflectometry (GNSS-R), the forward scattered signals exhibit both an incoherent and a coherent component. Current models assume that either one or the other are dominant, and the calibration and geophysical parameter retrieval (e.g., wind speed, soil moisture, etc.) are developed accordingly. Even the presence of the coherent component of a GNSS reflected signal itself has been a matter of discussion in the last years. In this work, a method developed to separate the leakage of the direct signal in the reflected one is applied to a data set of GNSS-R signals collected over the ocean by the Microwave Interferometer Reflectometer (MIR) instrument, an airborne dual-band (L1/E1 and L5/E5a), multi-constellation (GPS and Galileo) GNSS-R instrument with two 19-elements antenna arrays with 4 beam-steered each. The presented results demonstrate the feasibility of the proposed technique to untangle the coherent and incoherent components from the total power waveform in GNSS reflected signals. This technique allows the processing of these components separately, which increases the calibration accuracy (as today both are mixed and processed together), allowing higher resolution applications since the spatial resolution of the coherent component is determined by the size of the first Fresnel zone (300–500 meters from a LEO satellite), and not by the size of the glistening zone (25 km from a LEO satellite). The identification of the coherent component enhances also the location of the specular reflection point by determining the peak maximum from this coherent component rather than the point of maximum derivative of the incoherent one, which is normally noisy and it is blurred by all the glistening zone contributions |
dc.description.sponsorship | This work was founded by the Spanish Ministry of Science, Innovation and Universities, “Sensing withPioneering Opportunistic Techniques”, grant RTI2018-099008-B-C21, and the grant for recruitment of early-stageresearch staff FI-DGR 2015 of the AGAUR—Generalitat de Catalunya (FEDER), Spain, and Unidad de ExcelenciaMaría de Maeztu MDM-2016-060. |
dc.language.iso | eng |
dc.publisher | Multidisciplinary Digital Publishing Institute (MDPI) |
dc.rights | Attribution 3.0 Spain |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/es/ |
dc.subject | Àrees temàtiques de la UPC::Enginyeria de la telecomunicació |
dc.subject.lcsh | Global system for mobile communications |
dc.subject.other | GNSS-R |
dc.subject.other | sea |
dc.subject.other | coherent scattering |
dc.subject.other | incoherent scattering |
dc.title | Untangling the incoherent and coherent scattering components in GNSS-R and novel applications |
dc.type | Article |
dc.subject.lemac | Sistema global per a comunicacions mòbils |
dc.contributor.group | Universitat Politècnica de Catalunya. RSLAB - Grup de Recerca en Teledetecció |
dc.contributor.group | Universitat Politècnica de Catalunya. CTE-CRAE - Grup de Recerca en Ciències i Tecnologies de l'Espai |
dc.identifier.doi | 10.3390/rs12071208 |
dc.description.peerreviewed | Peer Reviewed |
dc.relation.publisherversion | https://www.mdpi.com/2072-4292/12/7/1208 |
dc.rights.access | Open Access |
local.identifier.drac | 28772188 |
dc.description.version | Postprint (published version) |
dc.relation.projectid | info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RTI2018-099008-B-C21/ES/SENSING WITH PIONEERING OPPORTUNISTIC TECHNIQUES/ |
local.citation.author | Muñoz, J.; Onrubia, R.; Pascual, D.; Park, H.; Camps, A.; Rudiger, C.; Walker, J.; Monerris, A. |
local.citation.publicationName | Remote sensing |
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