Extrapolation of the High Frequency and Late Time Response With Local Linear Basis Functions and Its Application in Evaluating Lightning Electric Field
| العنوان: | Extrapolation of the High Frequency and Late Time Response With Local Linear Basis Functions and Its Application in Evaluating Lightning Electric Field |
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| المؤلفون: | Jaebok Lee, Pengfei Zhang, Jun Zou, Mun-No Ju |
| المصدر: | IEEE Transactions on Electromagnetic Compatibility. 62:2101-2110 |
| بيانات النشر: | Institute of Electrical and Electronics Engineers (IEEE), 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Computer science, Extrapolation, 020206 networking & telecommunications, Basis function, 02 engineering and technology, Condensed Matter Physics, Integral equation, Lightning, Atomic and Molecular Physics, and Optics, Matrix decomposition, Time–frequency analysis, Singular value decomposition, 0202 electrical engineering, electronic engineering, information engineering, Applied mathematics, Transient (oscillation), Electrical and Electronic Engineering |
| الوصف: | To avoid numerical inaccuracy of the transient solution by the time-domain solvers or frequency-domain solvers, a simultaneous extrapolation approach reconstructing of the wide-band frequency spectrum using low-frequency and early-time data by the local linear basis functions is presented. The basic idea is transforming the transient integral equations into the analytical-form matrix equation, which can be solved using basis functions with a local support. By means of the early-time and low-frequency data, the matrix equation is solved by the method of singular value decomposition to obtain the wide-band spectrum. The proposed approach is validated by several numerical examples and applied in calculating the transient horizontal electric field of a lightning channel. The major advantage of the presented approach is an efficient and stable algorithm that can be generalized to apply to other transient scenarios when frequency- and time-domain-based transient analysis are involved. |
| تدمد: | 1558-187X 0018-9375 |
| DOI: | 10.1109/temc.2019.2950980 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::786da8e8862032fe7350b510ac9d756d https://doi.org/10.1109/temc.2019.2950980 |
| Rights: | CLOSED |
| رقم الانضمام: | edsair.doi...........786da8e8862032fe7350b510ac9d756d |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 1558187X 00189375 |
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| DOI: | 10.1109/temc.2019.2950980 |