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- W2317687951 abstract "PreviousNext No AccessProceedings of the 8th SEGJ International Symposium, Kyoto, Japan, 26-28 November 2006Numerical modeling of antenna transmission for borehole ground-penetrating radarAuthors: Hannuree JangMi Kyung ParkHee Joon KimHannuree JangDept. Environmental Exploration Eng., Pukyong National Univ., Search for more papers by this author, Mi Kyung ParkDept. Environmental Exploration Eng., Pukyong National Univ., Search for more papers by this author, and Hee Joon KimDept. Environmental Exploration Eng., Pukyong National Univ., Search for more papers by this authorhttps://doi.org/10.1190/segj082006-001.37 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract High-frequency electromagnetic (EM) wave propagation phenomena associated with borehole ground-penetrating radar (GPR) surveys are complex. To improve the understanding of governing physical processes, we present a finite-difference time-domain solution of Maxwell's equations in cylindrical coordinates. This approach allows us to model the full EM wavefield associated with borehole GPR surveys. Furthermore, the use of cylindrical coordinates is computationally efficient, correctly emulates the three-dimensional geometrical spreading characteristics of the wavefield, and is an effective way to discretize explicitly small-diameter boreholes. Numerical experiments show that the existence of a borehole can give rise to strong waveguide effects, and guided waves are modal in nature. The excitation of the various modes depends on the diameter and filling material of the borehole, the shape of the feeding signal, and the length of the antenna. Permalink: https://doi.org/10.1190/segj082006-001.37FiguresReferencesRelatedDetailsCited ByModelling the radio imaging method using electric dipoles in a homogeneous whole spaceTomas Naprstek* and Richard Smith5 August 2014 Proceedings of the 8th SEGJ International Symposium, Kyoto, Japan, 26-28 November 2006ISBN (print):978-4-938493-09-7ISSN (online):2159-6832Copyright: 2006 Pages: publication data© 2006 Published in electronic format with permission by the Society of Exploration Geophysicists of JapanPublisher:Society of Exploration Geophysicists HistoryPublished: 08 Nov 2012 CITATION INFORMATION Hannuree Jang, Mi Kyung Park, and Hee Joon Kim, (2006), Numerical modeling of antenna transmission for borehole ground-penetrating radar, SEG Global Meeting Abstracts : 1-6. https://doi.org/10.1190/segj082006-001.37 Plain-Language Summary PDF DownloadLoading ..." @default.
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