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dc.contributor.authorMolina Ordóñez, Carlos
dc.contributor.authorCamps Carmona, Adriano José
dc.contributor.otherUniversitat Politècnica de Catalunya. Doctorat en Teoria del Senyal i Comunicacions
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions
dc.date.accessioned2021-02-09T11:44:51Z
dc.date.available2021-02-09T11:44:51Z
dc.date.issued2020-11-02
dc.identifier.citationMolina, C.; Camps, A. First evidences of ionospheric plasma depletions observations using GNSS-R data from CYGNSS. "Remote sensing", 2 Novembre 2020, vol. 12, núm. 3782, p. 1-21.
dc.identifier.issn2072-4292
dc.identifier.urihttp://hdl.handle.net/2117/337856
dc.description.abstractAt some frequencies, Earth’s ionosphere may significantly impact satellite communications, Global Navigation Satellite Systems (GNSS) positioning, and Earth Observation measurements. Due to the temporal and spatial variations in the Total Electron Content (TEC) and the ionosphere dynamics (i.e., fluctuations in the electron content density), electromagnetic waves suffer from signal delay, polarization change (i.e., Faraday rotation), direction of arrival, and fluctuations in signal intensity and phase (i.e., scintillation). Although there are previous studies proposing GNSS Reflectometry (GNSS-R) to study the ionospheric scintillation using, for example TechDemoSat-1, the amount of data is limited. In this study, data from NASA CYGNSS constellation have been used to explore a new source of data for ionospheric activity, and in particular, for travelling equatorial plasma depletions (EPBs). Using data from GNSS ground stations, previous studies detected and characterized their presence at equatorial latitudes. This work presents, for the first time to authors’ knowledge, the evidence of ionospheric bubbles detection in ocean regions using GNSS-R data, where there are no ground stations available. The results of the study show that bubbles can be detected and, in addition to measure their dimensions and duration, the increased intensity scintillation (S4) occurring in the bubbles can be estimated. The bubbles detected here reached S4 values of around 0.3–0.4 lasting for some seconds to few minutes. Furthermore, a comparison with data from ESA Swarm mission is presented, showing certain correlation in regions where there is S4 peaks detected by CYGNSS and fluctuations in the plasma density as measured by Swarm
dc.description.sponsorshipThis work has been partially funded by the Spanish MCIU and EU ERDF project (RTI2018-099008-B-C21/AEI/10.13039/501100011033) “Pioneering Opportunistic Techniques”, grant to “CommSensLab-UPC” Excellence Research Unit Maria de Maeztu (MINECO grant MDM-2016-600), and ESA project AO 1-8862/17/NL/AF/eg “RADIO CLIMATOLOGY MODELS OF THE IONOSPHERE: STATUS AND WAY FORWARD”.
dc.format.extent21 p.
dc.language.isoeng
dc.publisherMultidisciplinary Digital Publishing Institute (MDPI)
dc.rightsAttribution 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Enginyeria de la telecomunicació
dc.subject.lcshBubbles
dc.subject.lcshGlobal Positioning System
dc.subject.otherIonosphere
dc.subject.otherScintillation
dc.subject.otherGNSS-R
dc.subject.otherEquatorial plasma depletions
dc.subject.otherBubbles
dc.subject.otherCYGNSS
dc.subject.otherSwarm
dc.titleFirst evidences of ionospheric plasma depletions observations using GNSS-R data from CYGNSS
dc.typeArticle
dc.subject.lemacIonosfera
dc.subject.lemacBombolles
dc.subject.lemacSistema de posicionament global
dc.contributor.groupUniversitat Politècnica de Catalunya. RSLAB - Grup de Recerca en Teledetecció
dc.identifier.doi10.3390/rs12223782
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttps://www.mdpi.com/2072-4292/12/22/3782
dc.rights.accessOpen Access
local.identifier.drac30466594
dc.description.versionPostprint (published version)
dc.relation.projectidinfo:eu-repo/grantAgreement/FEDER/MDM-2016-0600
dc.relation.projectidinfo:eu-repo/grantAgreement/ESA/AO 1-8862/17/NL/AF/eg
dc.relation.projectidinfo:eu-repo/grantAgreement/MINECO/FEDER/RTI2018-099008-B-C21/AEI/10.13039/501100011033
local.citation.authorMolina, C.; Camps, A.
local.citation.publicationNameRemote sensing
local.citation.volume12
local.citation.number3782
local.citation.startingPage1
local.citation.endingPage21


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