【摘要】 为刻画地震信号的局部层次特征,提高复杂地质体的地震分辨率,本文利用倒谱变换能够提高分辨率的特点,结合短时傅里叶变换,构造了倒时-频变换算法,并提出地震分倒频处理技术.文中对地震分倒频处理技术的公式推导、算法设计、分倒频处理技术提高地震纵向分辨率的机理进行了详细研究.设计出了适合三维地震资料处理的软件,并从理论上阐述了地震分倒频处理技术能够提高地震分辨率.利用倒时-频变换对多分量线性调谐信号模型做倒时-频分析,可以得到良好的时频分辨率.实际三维地震资料计算表明,该方法能够提高地震纵向分辨率,且计算效率高,适合大规模三维地震资料的处理.更多还原

【Abstract】 In order to depict the local characteristics of seismic signal,to improve the seismic resolution of complex geological body,we construct a quefrency-frequency transform algorithm and put forward the seismic cepstral decomposition progressing technique.The technique was derived from Cepstrum transform and short-time Fourier transform.It uses Cepstrum transform can improve the resolution of features.We study in detail the formula of the seismic cepstral decomposition progressing technique,algorithm design and the technology can improve the vertical seismic resolution of the mechanism in the paper.Designed three-dimensional seismic data processing software,and also explained the seismic cepstral decomposition progressing technique can improve the seismic resolution in theory.Using the quefrency-frequency transform to analyze linear tuning of multi-component signal Model,we have a fine time-frequency resolution.Calculations of the actual three-dimensional seismic data show that the seismic cepstral decomposition progressing technique can improve the seismic vertical resolution and have high computational efficiency.It is suitable for large-scale three-dimensional seismic data processing.更多还原