摘要
S变换能够提供每一个频率成分的瞬时幅值和瞬时相位的特点,笔者提出在时频域得到工业干扰的幅值和相位,然后用地震记录减去工业干扰,即可达到压制工业干扰的目的。合成地震记录和实际地震数据处理表明,此方法都能取得较好的效果,并且无论是固定幅值和相位的工业干扰,还是幅值和相位随时间变化的工业干扰,此方法都适用。
To tackle power interference in seismic record,the authors use S transform which can provide each frequency with the instantaneous amplitude and instantaneous phase so as to obtain the power interference amplitude and phase by using S transform in the time-frequency domain and get the power interference.In this way,the power interference can be reduced.Synthetic seismogram and actual seismic data processing show that this method can achieve good results,no matter whether the interference is a fixed amplitude and phase of power interference or a time-varying amplitude and phase of power interference.
出处
《物探与化探》
CAS
CSCD
北大核心
2010年第4期532-535,共4页
Geophysical and Geochemical Exploration
关键词
工业干扰
S变换
时频分析
power interference
S-transform
time-frequency analysis
