频谱约束反褶积及应用

由于地震数据不同频带信噪比有差异等原因，反褶积处理后常出现分频率提高的同时信噪比明显降低的情形，针对这种情形，本文提出了频谱约束反褶积方法以解决该问题，频谱约束反褶积根据数据的信噪比特性自动求取频谱约束算子，限制低信噪比频段的反褶积程度，达到反褶积后处理提高分频率的同时保持一定的信噪比的目的，本方法应用方便，理论和实际数据的应用效果证实了其有效性。

Spectrum-constrained deconvolu-tion and its application.

Because the signal-to-noise ratio in different frequency band is different on seismic data, the resolution is improved meanwhile the signal-to-noise ratio has decreased significantly after deconvolution. Aimed at the circumstances, the paper introduced a method of spectrum-constrained deconvolution, which designed auto-matically spectrum-constrained operator according to character of signal-to-noise ration on seismic data, limited the degree of deconvolution at frequency band with low signal-to-noise ratio and achieved object of while improving resolution, some signal-to-noise ratio can be preserved after deconvolution processing. Application of the method is feasible. The effects of application in real data proved that the method is effective.