基于小波分解和相空间重构的大气电场混沌特征浅析

Analysis of Chaos Characteristics of Atmospheric Electric Field Based on Wavelet Decomposition and Phase Space Reconstruction

本文通过对伴有闪电过程的地面大气电场强度时间序列进行相空间重构分析知,闪电时段内地面大气电场强度时间序列均呈现混沌特性,而非闪电时段内地面大气电场强度时间序列并不全部呈现混沌特性;闪电时段内的地面大气电场强度时间序列经过小波函数sym5的4层分解重组的低频部分的相空间重构混沌特性较原始时间序列的相空间重构混沌特性明显。

Through the phase space reconstruction analysis knowledge, lightning period ground atmospheric electric field intensity time series showed a chaotic characteristics, rather than during the period of lightning ground atmospheric electric field intensity time series does not show chaotic characteristics of accompanied by lightning ground atmospheric electric field intensity time series; within the period lightning ground atmospheric electric field intensity time series through the four layer wavelet sym5 decomposition reorganization of the low-frequency part of the phase space reconstruction of chaotic characteristics than the original time series in the phase space reconstruction of chaotic characteristics significantly.