【摘要】 将S变换引入到地震地层研究中,用广义S变换代替短时Fourier变换或连续小波变换,用于地震数据频谱分解和提取地震旋回特征.为此,首先研究了S变换的性质及其与短时Fourier变换、连续小波变换的比较,进一步给出广义S变换的特点,说明其如何获得更高分辨率.同时,对前述方法进行数值实现,模型数据试算结果表明算法的正确和有效性.在上述工作基础上,本文首次提出用广义S变换进行地震频谱分解和研究地震旋回,给出实现策略及2D实际地震数据试算结果,证明方法的有效性,为进一步实用化奠定理论和方法基础.更多还原

【Abstract】 In this paper,the S transform is introduced into the study of seismic stratigraphy by substituting the STFT or CWT with generalized S transform.Firstly,the properties of S transform and its comparisons to STFT and CWT are studied,and then the generalized S transform(GST) and the reasons of its high resolution are derived.With modeling seismic signal,the numerical methods of them are implemented,which show the validity.On base of the results,GST is applied to seismic spectral decomposition and seismic sequence cycles analysis originally.By the proposed schemes,good results have been gained for real 2D seismic data,which show that the method is valid and establishes a base for further actual application to oil industry.更多还原