论文部分内容阅读
常规反褶积方法具有很多局限性,往往要求地震子波是最小相位并且是平稳的,反射系数序列为白噪等等.本文将常规褶积模型扩展成时变褶积模型,通过S变换对地震记录进行谱分解,估计出震源子波和衰减因子,求出时变子波,在S域进行时变反褶积,再反S变换到时间域输出结果.此方法完全打破了常规反褶积方法的局限性,数值试验和实际资料处理均证明了此方法的有效性.
The conventional deconvolution method has many limitations, and often requires the seismic wavelet is the minimum phase and is stable, the reflection coefficient sequence is white noise, etc. In this paper, the conventional convolution model is extended to the time-varying convolution model, through S transform pair The seismic records are then decomposed to estimate the source wavelet and attenuation factor, time-varying wavelets are obtained, time-varying deconvolution is performed in the S-domain, and inversely S-transformed to the output in the time domain. This method completely breaks the conventional de- The limitation of the plot method, numerical experiment and actual data processing prove the effectiveness of this method.