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利用分形插值方法对稀疏采样的地震记录进行了插值加密处理,并对原始记录和分形插值重建记录进行了叠前逆时偏移处理.数值实验表明,分形插值重建的地震图是原始地震图的良好近似,而分形插值叠前偏移剖面是原始记录偏移剖面的良好近似,二者的分辨率几乎一样.利用分形插值重建技术可以在节约经济成本的情况下,得到地下结构的高精度成像结果.
The fractal interpolation method is used to interpolate the sparsely sampled seismic records and the prestack inverse time migration is performed on the original records and the fractal interpolation reconstruction records. Numerical experiments show that the fractal interpolation reconstructed seismograms are the original seismograms And the fractal interpolation prestack migration profile is a good approximation of the original recording migration profile, the resolution of the two is almost the same.Using fractal interpolation reconstruction technology can get the high precision imaging of the underground structure under the economical cost result.