摘要
对于非平稳随机信号,使用时频分析法可兼顾信号的时域和频域的局部特征。因此,采用短时傅里叶变换和小波变换对榆林台地磁秒数据进行分析研究,并总结这两种时频分析方法在地磁数据分析中的应用效果。
For non-stationary random signal,the time-frequency analysis method can take into account the local characteristics of the signal in the time and frequency domain. Therefore,short-time fourier transform and wavelet transform are used to analyze the geomagnetic second data of Yulin station,and the application effect of these two time-frequency analysis methods in geomagnetic data analysis is summarized.
作者
王静
贺巍
汪伟明
WANG Jing;HE Wei;WANG Wei-ming(Earthquake Administration of Shaanxi Province,Xi'an 710068,China)
出处
《通信电源技术》
2020年第1期83-84,共2页
Telecom Power Technology
基金
2019年度中国地震局监测、预报、科研三结合课题(3JH-201901055)
关键词
短时傅里叶变换
小波变换
地磁数据
short time Fourier transform
wavelet transform
geomagnetic data