On deterministic-stochastic time domain study of dipole antenna for GPR applications

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• 作者：D. Poljak^a ; ^{dpoljak@fesb.hr} ; S. Antonijevic^b ; ^{santon@pmfst.hr} ; S. Sesnic^a ; ^{ssesnic@fesb.hr} ; S. Lallechere^c ; ^{lallechere@univ-bpclermont.fr} ; K. El Khamlichi Drissi^c ; ^{drissi@univ-bpclermont.fr}
• 关键词：Dipole antennas ; Time-domain analysis ; Electromagnetic transients ; Ground penetrating radar ; Hallen integral equation ; Indirect boundary element method ; Stochastic-collocation method
• 刊名：Engineering Analysis with Boundary Elements
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：73
• 期：Complete
• 页码：14-20
• 全文大小：2029 K
• 卷排序：73

文摘

A deterministic-stochastic transient study of Ground Penetrating Radar (GPR) dipole antenna radiating in a presence of a two-media configuration is carried out in the paper. A deterministic direct time domain formulation is based on the corresponding space-time Hallen integral equation. The numerical solution is carried out via the improved space-time variant of the Galerkin-Bubnov Indirect Boundary Element Method (GB-IBEM). The Stochastic-Collocation (SC) method is then applied to determine accurate confidence intervals due to the random variations of GPR input parameters. Once obtaining the current along the dipole antenna, it is possible to calculate other parameters of interest for GPR dipole antenna behavior, such as the field reflected from the interface of two media, or the field transmitted into a lower half-space. Some illustrative numerical results for the transient current along the dipole antenna and transient electric field transmitted into the lower half-space are given.