经验模态分解与水上地震反射数据处理方法

受水流及船舶发动机干扰,水域地震反射法勘探资料判别异常体存在很大的困难,本文采用经验模态分解方法获得地震记录的多阶本征模态函数,每一阶本征模态函数代表了信号在某一特征尺度上的信息,为地震数据的处理和解释提供了更多的参考信息。实例证明,基于经验模态分解的地震反射数据处理方法,有助于压制随机噪声,提高地震反射数据的解释精度和准确性。

The Empirical Mode Decomposition and Data Processing of Seismic Reflection in Water

Since the disturbance of the flow of river and marine engine, the exploration data gained seismic reflection data from water area has great difficulties in distinguishing abnormality. In this paper, empirical mode decomposition method is used to decompose the seismic imaging profile, which could obtain the intrinsic mode function pictures with different frequencies. Each intrinsic mode function represents the local detailed information of signal in one particular domain. This method provides more information for the processing and interpretation of seismic imaging profile. As has been showed in examples, the seismic data processing method based on empirical mode decomposition can suppress random noise and improve the precision and correctness of the seismic imaging data interpretation.