用瞬时振幅进行图像重建的方法

A method for image reconstruction using instantaneous amplitude

近年来,图像重建技术已在地震资料处理中得到应用,但是,目前多数方法一般都以改善地下界面的几何形态为研究对象,很少涉及岩性特征。针对这一情况,我们提出一种采用瞬时振幅进行图像重建的方法。由于瞬时振幅与地震信号的符号、频率和相位无关,因此,该法的图像重建不会因岩性变化引起的极性反转、频率或相位的变化而受影响。对实际地震资料处理的结果表明,该方法不仅可保持有效信号的频率和相位特性,而且有较强的去噪能力。

In recent years,image reconstruction technique has been applied to seismic data processing.However,at present,most methods in this field aim at improving geometrically seismic horizons,with lithology rarely considered.Hence,A new method for image reconstruction using instantaneous amplitude is put forward here.The instantaneous ampli- tude has nothing to do with sign,frequency and phase of seismic data, so that image reconstruction of this method can not be affected by the polarity,frequency and phase variations which are caused by lithology change.Real seismic data processing result has proved that this method not only preserves the frequency and phase of effective seismic signals but also suppresses noise quite well.