基于高阶谱的地震子波估计

常规的地震子波估计是在假设子波为最小相位的基础上对地震记录进行处理.针对这一局限性,研究了基于地震记录高阶谱的地震子波估计方法.该方法无需对子波作任何假设,直接从地震记录的高阶谱中恢复地震子波的振幅谱和相位谱,进而重构地震子波,并对不同相位地震子波的理论模型和野外实际资料进行了处理,结果表明这一方法对于提高地震资料的分辨率具有可行性和应用潜力.

Seismic wavelet estimation based on the high-order spectrum

The wavelet is usually presupposed the minimum phase in wavelet estimation. In order to get rid of the limitation, a new wavelet estimation method based on the high-order spectrum of seismic data is brought forward in this paper. There is no any presumption of the wavelet for this method. Using bispectrum of seismic, the phase spectrum and amplitude spectrum of the wavelet is recovered and the wavelet is restructured. The processed results of synthetic data with different wavelet phases and real data show that the method is feasible and promising in improving the resolution of seismic data.