摘要
根据地震波信号具有持时短、非平稳、三向传播等特点,通过小波包分析技术,对已知地震波信号进行小波包分析,得到不同频带地震波信号的能量分布特征.在此基础上,对各地震波信号主震频率能量进行分析.以天津波为例,分析了天津波地震信号沿三个方向传播的能量分布规律.
According to the characteristics of seismic signals, such as： short-time, non-stationary, and three propagation, wavelet packet analysis was carried out on the known seismic signal by wavelet packet analysis techniques, and the different frequency band energy distribution characteristics of the seismic signal were available. And then the seismic signal main frequency energy was analyzed. Taking Tianjin as an example, this paper analyzed the wave seismic signal propagation along the three directions of energy distribution.
出处
《天津城建大学学报》
2017年第3期183-187,共5页
Journal of Tianjin Chengjian University
关键词
地震波信号
小波包
频带
主震频率
能量分布
seismic wave signals
wavelet packet
frequency band
the main frequency
energy distribution
