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 timefrequency 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 timevarying amplitude and phase of power interference.
汪铁望, 于相海, 刘明乾, 胡浩, 周夏丽. 基于S变换的工频干扰压制[J]. 物探与化探, 2010, 34(4): 532-535.
WANG Tie-Wang, YU Xiang-Hai, LIU Ming-Qian, HU Hao, ZHOU Xia-Li. THE ATTENUATION OF POWER INTERFERENCE BASED ON STRANSFORM. Geophysical and Geochemical Exploration, 2010, 34(4): 532-535.
[6]Stockwell R G, Mansinha L, Lowe R P.Localization of the complex spectrum: the S transform[J].IEEE Trans Signal Process,1996,44:998-1001.
[7]ChienChun Huang.A novel application of the Stransform in removing powerline interference from biomedical signals[J].Physiological Measurement,2009,30:13-27..