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Comparative Study of Computational Electromagnetics Applied to Radiowave Propagation in Wildfires

2020-08Conference paper Open access
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datacite.subject.fosEngenharia e Tecnologia::Engenharia Eletrotécnica, Eletrónica e Informática
dc.contributor.authorFaria, Stefânia
dc.contributor.authorVala, Mário
dc.contributor.authorCoimbra, Pedro
dc.contributor.authorFelício, João
dc.contributor.authorLeonor, Nuno
dc.contributor.authorFernandes, Carlos
dc.contributor.authorSalema, Carlos
dc.contributor.authorCaldeirinha, Rafael
dc.date.accessioned2025-09-16T16:12:20Z
dc.date.available2025-09-16T16:12:20Z
dc.date.issued2020-08
dc.descriptionArticle number - 9232369; Conference date - 29 August 2020 - 5 September 2020; Conference code - 164213
dc.descriptionEISBN - 978-9-4639-6800-3
dc.description.abstractIn this paper, a comparative study of four computational electromagnetic techniques to model the 2-dimensional radiowave propagation phenomena in wildfires, is proposed. The fire dynamics for a small tree specimen is studied, in which gases released from the combustion process are used to investigate the generation of an ionised plasma and, thus, to evaluate the gradient of the medium refractive index using the cold plasma model. Consequently, the presence of fire has been demonstrated to introduce additional losses in the radio path that may be critical to radio communication systems that are widely used in mission critical applications. The gradient of the refractive index across the vegetation volume yielded by the cold plasma model is used as input parameter to different numerical methods and electromagnetic solvers at 385 MHz (i.e. TETRA frequency band in Portugal) and, subsequently, their applicability to wildfires is assessed.eng
dc.description.sponsorshipThis work is part of the project RESCuE-TOOL (PCIF/SSI/0194/2017) and UID/EEA/50008/2020, both funded by the Portuguese Government, Portuguese Foundation for Science and Technology (FCT).
dc.identifier.citationS. Faria et al., "Comparative Study of Computational Electromagnetics Applied to Radiowave Propagation in Wildfires," 2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science, Rome, Italy, 2020, pp. 1-4, doi: https://doi.org/10.23919/URSIGASS49373.2020.9232369.
dc.identifier.doi10.23919/ursigass49373.2020.9232369
dc.identifier.eissn2642-4339
dc.identifier.isbn978-1-7281-5690-3
dc.identifier.isbn978-9-4639-6800-3
dc.identifier.issn2640-7027
dc.identifier.urihttp://hdl.handle.net/10400.8/14077
dc.language.isoeng
dc.peerreviewedyes
dc.publisherIEEE Canada
dc.relationRadio coverage for emergency communication systems to operate under critical wildfire environments - TOOL
dc.relation.hasversionhttps://ieeexplore.ieee.org/document/9232369
dc.relation.ispartof2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science
dc.rights.uriN/A
dc.subjectTime-domain analysis
dc.subjectComputational modeling
dc.subjectFinite difference methods
dc.subjectPlasmas
dc.subjectAttenuation
dc.subjectVegetation
dc.subjectSolid modeling
dc.titleComparative Study of Computational Electromagnetics Applied to Radiowave Propagation in Wildfireseng
dc.typeconference paper
dspace.entity.typePublication
oaire.awardTitleRadio coverage for emergency communication systems to operate under critical wildfire environments - TOOL
oaire.awardURIhttp://hdl.handle.net/10400.8/14075
oaire.citation.conferenceDate2020-08
oaire.citation.conferencePlaceRome, Italy
oaire.citation.title33rd General Assembly and Scientific Symposium of the International Union of Radio Science, URSI GASS 2020
oaire.fundingStreamConcurso de Projetos de Investigação Científica e Desenvolvimento Tecnológico no Âmbito da Prevenção e Combate a Incêndios Florestais - 2017
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameLeonor
person.familyNameCaldeirinha
person.givenNameNuno
person.givenNameRafael
person.identifier.ciencia-id4D18-2B1E-0960
person.identifier.orcid0000-0002-5405-1503
person.identifier.orcid0000-0003-0297-7870
person.identifier.ridF-1499-2015
person.identifier.scopus-author-id7801603527
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In this paper, a comparative study of four computational electromagnetic techniques to model the 2-dimensional radiowave propagation phenomena in wildfires, is proposed. The fire dynamics for a small tree specimen is studied, in which gases released from the combustion process are used to investigate the generation of an ionised plasma and, thus, to evaluate the gradient of the medium refractive index using the cold plasma model. Consequently, the presence of fire has been demonstrated to introduce additional losses in the radio path that may be critical to radio communication systems that are widely used in mission critical applications. The gradient of the refractive index across the vegetation volume yielded by the cold plasma model is used as input parameter to different numerical methods and electromagnetic solvers at 385 MHz (i.e. TETRA frequency band in Portugal) and, subsequently, their applicability to wildfires is assessed.
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