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Fast evaluation of lightning electromagnetic fields based on matrix pencil method in time domain
Author(s) -
Zhang Yin,
Liao Cheng,
Shang Yuping
Publication year - 2021
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.32738
Subject(s) - matrix pencil , correctness , time domain , transmission line matrix method , pencil (optics) , lightning (connector) , matrix (chemical analysis) , expression (computer science) , electromagnetic field , algorithm , computer science , point (geometry) , electronic engineering , mathematics , computational science , computational electromagnetics , engineering , physics , geometry , optics , computer vision , power (physics) , eigenvalues and eigenvectors , materials science , quantum mechanics , composite material , programming language
The time domain expression of the lightning electromagnetic fields (LEMF) contains multiple integration processes, and the direct solution tends to take up a lot of calculation time. In this paper, the structure of the time domain expression of the LEMF is analyzed, the idea that using the matrix pencil method to realize the fast evaluation of the LEMF is proposed, and the feasibility of this method for calculating the LEMF is discussed. Besides, several numerical examples are given to prove the efficiency and correctness of the proposed method when the parameters of the observation point and ground are varied.