磁暴可能对电网、油气管线等技术系统的安全运行造成影响,分析磁暴的时频特征对研究技术系统的影响有重要意义。本研究采用多尺度小波变换,分析广东肇庆地磁台的磁暴地磁数据,将磁暴地磁分量数据分解为高频和低频,研究了磁暴地磁分量的时域特征,得到了一些有价值的结论。
Magnetic storm may have effects on the safe operation of technical system, such as power grids, oil and gas pipelines and so on, so the analysis of time-frequency characteristics of magnetic storm have great significance for technology systems. In the paper, decomposing magnetic storm data of Zhaoqing into high or low frequency elements with multi-scale wavelet transform, we study time-domain characteristics of magnetic storm component and obtain some valuable conclusions.