现代电子技术2024，Vol.47Issue(24)：13-17,5.DOI:10.16652/j.issn.1004-373x.2024.24.003
基于傅里叶变换的雷电磁频谱研究
Research on lightning magnetic spectrum based on Fourier transform
摘要
Abstract
In order to study the magnetic spectrum characteristics of direct lightning and inductive lightning,the standard lightning current waveform is drawn by means of Matlab simulation software.The spectral characteristics of the standard lightning current waveform is analyzed by means of fast Fourier transform,and the harmful frequency range of the lightning current waveform in the corresponding frequency domain is extracted.The fundamental wave and high-order harmonics of the lightning current are extracted from the spectrum,and the amplitude and phase of the first 5 times harmonics are extracted to restore the function expression of the harmonics.The frequency range of harmful harmonics is analyzed and the scientific methods are used to filter them,which can provide a reference for the development of lightning magnetic pulse radiation protection measures.关键词
雷电磁频谱/快速傅里叶变换/直击雷/感应雷/雷电流波形/谐波提取Key words
lightning magnetic spectrum/fast Fourier transform/direct lightning/inductive lightning/lighting current waveform/harmonic extraction分类
电子信息工程引用本文复制引用
孙军民..基于傅里叶变换的雷电磁频谱研究[J].现代电子技术,2024,47(24):13-17,5.基金项目
甘肃省青年科技基金项目(20JR10RA135) （20JR10RA135）
庆阳自然科学基金项目(QY2021A-F014) （QY2021A-F014）
陇东学院博士基金项目(XYBYZK2407) （XYBYZK2407）
陇东学院青年科技创新项目(XYZK2204) （XYZK2204）
甘肃省自然科学基金项目(23JRRM0755) （23JRRM0755）
