Comparison of FDTD and TDWP Methods for Simulating Electromagnetic Wave Propagation above Terrains
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Journal of Microwaves. Optoelectronics and Electromagnetic Applications |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2179-10742018000400416 |
Resumo: | Abstract Researchers have always been in face of path loss calculation in different media for applications such as telecommunication link design. Wave propagation calculations in large spaces using the FDTD method is time-consuming and imposes a great computational burden. For this reason, to replace the classical FDTD method for wave propagation simulation and path loss calculation in large spaces, optimized methods, namely TDWP, have been provided. In this paper, the use of the TDWP method for wave propagation simulation and path loss calculation above a terrain is investigated. Longitudinal components of ground-waves are taken into account (including direct waves, ground reflections, and surface waves). Propagation space is longitudinally divided into smaller FDTD windows with finite length. The electromagnetic pulse travels through these windows from left to right to the desired point. But despite its capability in reducing computational burden and increasing processing speed, TDWP has lower precision in instantaneous field simulation and calculation of propagation coefficients, so that results obtained from FDTD and TDWP are clearly different. In this paper, some efficient methods are proposed, which yield an increase in method accuracy. |
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Journal of Microwaves. Optoelectronics and Electromagnetic Applications |
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Comparison of FDTD and TDWP Methods for Simulating Electromagnetic Wave Propagation above TerrainsElectromagnetic wave propagationGroundwavesSurface wave propagationTerrain modelingConsecutive windowsFinite-difference time-domain (FDTD)Time-domain wave propagation (TDWP)Abstract Researchers have always been in face of path loss calculation in different media for applications such as telecommunication link design. Wave propagation calculations in large spaces using the FDTD method is time-consuming and imposes a great computational burden. For this reason, to replace the classical FDTD method for wave propagation simulation and path loss calculation in large spaces, optimized methods, namely TDWP, have been provided. In this paper, the use of the TDWP method for wave propagation simulation and path loss calculation above a terrain is investigated. Longitudinal components of ground-waves are taken into account (including direct waves, ground reflections, and surface waves). Propagation space is longitudinally divided into smaller FDTD windows with finite length. The electromagnetic pulse travels through these windows from left to right to the desired point. But despite its capability in reducing computational burden and increasing processing speed, TDWP has lower precision in instantaneous field simulation and calculation of propagation coefficients, so that results obtained from FDTD and TDWP are clearly different. In this paper, some efficient methods are proposed, which yield an increase in method accuracy.Sociedade Brasileira de Microondas e Optoeletrônica e Sociedade Brasileira de Eletromagnetismo2018-10-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S2179-10742018000400416Journal of Microwaves, Optoelectronics and Electromagnetic Applications v.17 n.4 2018reponame:Journal of Microwaves. Optoelectronics and Electromagnetic Applicationsinstname:Sociedade Brasileira de Microondas e Optoeletrônica (SBMO)instacron:SBMO10.1590/2179-10742018v17i41219info:eu-repo/semantics/openAccessFallah,MahmoudNazeri,Amir. Heng2018-12-06T00:00:00Zoai:scielo:S2179-10742018000400416Revistahttp://www.jmoe.org/index.php/jmoe/indexONGhttps://old.scielo.br/oai/scielo-oai.php||editor_jmoe@sbmo.org.br2179-10742179-1074opendoar:2018-12-06T00:00Journal of Microwaves. Optoelectronics and Electromagnetic Applications - Sociedade Brasileira de Microondas e Optoeletrônica (SBMO)false |
dc.title.none.fl_str_mv |
Comparison of FDTD and TDWP Methods for Simulating Electromagnetic Wave Propagation above Terrains |
title |
Comparison of FDTD and TDWP Methods for Simulating Electromagnetic Wave Propagation above Terrains |
spellingShingle |
Comparison of FDTD and TDWP Methods for Simulating Electromagnetic Wave Propagation above Terrains Fallah,Mahmoud Electromagnetic wave propagation Groundwaves Surface wave propagation Terrain modeling Consecutive windows Finite-difference time-domain (FDTD) Time-domain wave propagation (TDWP) |
title_short |
Comparison of FDTD and TDWP Methods for Simulating Electromagnetic Wave Propagation above Terrains |
title_full |
Comparison of FDTD and TDWP Methods for Simulating Electromagnetic Wave Propagation above Terrains |
title_fullStr |
Comparison of FDTD and TDWP Methods for Simulating Electromagnetic Wave Propagation above Terrains |
title_full_unstemmed |
Comparison of FDTD and TDWP Methods for Simulating Electromagnetic Wave Propagation above Terrains |
title_sort |
Comparison of FDTD and TDWP Methods for Simulating Electromagnetic Wave Propagation above Terrains |
author |
Fallah,Mahmoud |
author_facet |
Fallah,Mahmoud Nazeri,Amir. H |
author_role |
author |
author2 |
Nazeri,Amir. H |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Fallah,Mahmoud Nazeri,Amir. H |
dc.subject.por.fl_str_mv |
Electromagnetic wave propagation Groundwaves Surface wave propagation Terrain modeling Consecutive windows Finite-difference time-domain (FDTD) Time-domain wave propagation (TDWP) |
topic |
Electromagnetic wave propagation Groundwaves Surface wave propagation Terrain modeling Consecutive windows Finite-difference time-domain (FDTD) Time-domain wave propagation (TDWP) |
description |
Abstract Researchers have always been in face of path loss calculation in different media for applications such as telecommunication link design. Wave propagation calculations in large spaces using the FDTD method is time-consuming and imposes a great computational burden. For this reason, to replace the classical FDTD method for wave propagation simulation and path loss calculation in large spaces, optimized methods, namely TDWP, have been provided. In this paper, the use of the TDWP method for wave propagation simulation and path loss calculation above a terrain is investigated. Longitudinal components of ground-waves are taken into account (including direct waves, ground reflections, and surface waves). Propagation space is longitudinally divided into smaller FDTD windows with finite length. The electromagnetic pulse travels through these windows from left to right to the desired point. But despite its capability in reducing computational burden and increasing processing speed, TDWP has lower precision in instantaneous field simulation and calculation of propagation coefficients, so that results obtained from FDTD and TDWP are clearly different. In this paper, some efficient methods are proposed, which yield an increase in method accuracy. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-10-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2179-10742018000400416 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2179-10742018000400416 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/2179-10742018v17i41219 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Microondas e Optoeletrônica e Sociedade Brasileira de Eletromagnetismo |
publisher.none.fl_str_mv |
Sociedade Brasileira de Microondas e Optoeletrônica e Sociedade Brasileira de Eletromagnetismo |
dc.source.none.fl_str_mv |
Journal of Microwaves, Optoelectronics and Electromagnetic Applications v.17 n.4 2018 reponame:Journal of Microwaves. Optoelectronics and Electromagnetic Applications instname:Sociedade Brasileira de Microondas e Optoeletrônica (SBMO) instacron:SBMO |
instname_str |
Sociedade Brasileira de Microondas e Optoeletrônica (SBMO) |
instacron_str |
SBMO |
institution |
SBMO |
reponame_str |
Journal of Microwaves. Optoelectronics and Electromagnetic Applications |
collection |
Journal of Microwaves. Optoelectronics and Electromagnetic Applications |
repository.name.fl_str_mv |
Journal of Microwaves. Optoelectronics and Electromagnetic Applications - Sociedade Brasileira de Microondas e Optoeletrônica (SBMO) |
repository.mail.fl_str_mv |
||editor_jmoe@sbmo.org.br |
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1752122126561705984 |