METHOD FOR INTERPOLATING SEISMIC DATA BY ANTI-ALIAS, ANTI-LEAKAGE FOURIER TRANSFORM

摘要

ABSTRACT OF THE DISCLOSUREMETHOD FOR INTERPOLATING SEISMIC DATA BY ANTI-ALIAS, ANTI-LEAKAGE FOURIER TRANSFORMAn estimated frequency-wavenumber spectrum is generated by applying a first Anti-leakage Fourier transform method to aliased frequency components in temporal-transformed seismic data and applying a second Anti-leakage Fourier transform method to unaliased frequency components in the temporal-transformed seismic data. The second Anti-leakage Fourier transform method applies an absolute frequency-wavenumber spectrum extrapolated from unaliased frequencies to aliased frequencies to weight frequency-wavenumber components of the aliased frequencies. An inverse temporal and spatial Fourier transform is applied to the estimated frequency-wavenumber spectrum, generating trace interpolation of the seismic data.FIG. 1