ELF Near-Field Propagation of a Vertical Electric Dipole Due to Lightning Discharges
| العنوان: | ELF Near-Field Propagation of a Vertical Electric Dipole Due to Lightning Discharges |
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| المؤلفون: | Mingjie Pang, Xin Wang, Hai Lin, Ting Ting Gu, Xiaopeng Ji, Hong Lei Xu |
| المصدر: | IEEE Transactions on Antennas and Propagation. 70:1250-1264 |
| بيانات النشر: | Institute of Electrical and Electronics Engineers (IEEE), 2022. |
| سنة النشر: | 2022 |
| مصطلحات موضوعية: | Physics, symbols.namesake, Dipole, Fourier transform, Wave propagation, symbols, Near and far field, Extremely low frequency, Transient (oscillation), Electrical and Electronic Engineering, Lightning, Electromagnetic radiation, Computational physics |
| الوصف: | The Sommerfeld Integrals (SIs) representing the electromagnetic (EM) wave propagation of a vertical electric dipole (VED), which has been established over a century, is essential for the understanding of EM radiation scheme of the natural Extremely Low Frequency (ELF) noises due to lightning discharges. The classical treatments providing with analytical formulas, such as “quasi-static” method and branch-cut integrations, however, rely on their validity of the applicable conditions, leading to considerable discrepancies in near zone for results between theoretical predictions and experimental observations in estimating the ELF radiation process of lightning discharges. By exploiting the assumptions of γ0 ≈ iλ and |γ0γ1|/k02 ≫ 1 (wavelength-scale), we re-visit the SIs to derive simplified formulas, where the ground medium is treated as a homogeneous highly conducting medium (that is, all relevant ELF frequency scales below about 30 Hz). In the meanwhile, the exact formulas are derived by an Inverse Fourier Transformation (IFT) from SIs for ELF transient pulses. Computation and discussion are carried out by obtained formulas for the modeling of the near-field propagation (distance-scale) caused by lightnings, which would provide with higher accuracies than using traditional approaches. |
| تدمد: | 1558-2221 0018-926X |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_________::816ac5377e5c2d1467cc9448214cb13fTest https://doi.org/10.1109/tap.2021.3122867Test |
| حقوق: | CLOSED |
| رقم الانضمام: | edsair.doi...........816ac5377e5c2d1467cc9448214cb13f |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15582221 0018926X |
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