【摘要】 地震子波在地震正演和反演中有着重要的作用,目前的子波提取主要基于最小相位假设,而实际的地震子波往往表现为混合相位特征。为了提取具有真实相位的地震子波,从地震信号的统计性出发,利用高阶统计量中的双谱,从反射地震记录中提取出地震子波的真实相位,进一步重构出地震子波。经过模型仿真和实际资料处理,证明了该地震子波提取方法的有效性和实用性。更多还原

【Abstract】 Seismic wavelet plays an important role in seismic forward modeling and inversion.At present,wavelet extraction is mainly based on the assumption that wavelet is min-phase.However,actual seismic wavelet often has mixed-phase.In order to extract the seismic wavelet with actual phase,starting from the statistical characteristic of seismic signals,by using the bispectrum of high-order statistics,the actual phase of seismic wavelet was extracted from reflection record to reconstruct seismic wavelet.By modeling testing and actual data processing,the method is proved to be effective and practical.更多还原