S变换在地震数据处理中的应用研究

摘要

针对地震资料处理中对分辨率要求较高的问题,介绍了S变换及其反变换的理论基础及相关公式,通过开展理论模型研究,在楔形模型基础上,分别应用短时傅里叶变换和S变换对模型正演数据进行时频分析.比较分析结果,可得S变换相对于短时傅里叶变换的优势,将S变换应用于实际地震资料处理中,其结果也验证了S变换能满足高分辨率地震资料处理的要求.通过理论及实际分析表明:S变换能解决部分实际地震勘探过程中地震资料分辨率较低的问题,为后期的构造解释及反演提供了较好的数据基础.%Aimed at the high resolution demands of seismic data processing,introduced the S-transform and its inverse transform theory and the related formula;then developing theoretical model research,on the basis of wedge model,respectively applies S-transform and short-time Fourier transform to forward modeling data for time-frequency analysis.Compared with the results of the analysis,it could be concluded that S-transform has a unique advantage over short-time Fourier transform.Finally,the S-transform was applied to the actual seismic data processing,and the results also have proven that the S-transform can meet the requirements of high resolution seismic data processing.Through the theoretical and practical analysis,it was proved that S-transform can solve the problem of low resolution of seismic data in some practical seismic exploration process,which provides a good data base for the later interpretation and inversion.