摘要
为了充分反映地震信号振幅增大和频率改变的特征,发展了一种以振幅和瞬时频率比乘积为特征参量的震相自动识别方法。谐波信号和有限实际地震记录的应用表明,本方法具有较高的识别精度。
In order to reflect the characteristics of amplitude increase and frequency changing of seismic signal, a new automatic recognition method of seismic phase is developed based on the instantaneous amplitude and instanta neous frequency. By application of some harmonious signals and real seismic records, the precision and stability of the method are proved.
出处
《世界地震工程》
CSCD
北大核心
2006年第4期1-4,共4页
World Earthquake Engineering
基金
国家自然科学基金资助项目(50378086)
地震科学联合基金资助课题(104139)
关键词
震相自动识别
振幅
瞬时频率
Automatic recognition of seismic phase
amplitude
instantaneous frequency
