Amplitude-preserving wave-equation imaging
نویسندگان
چکیده
We recover the amplitudes of the reflectivity function obtained by wave-equation migration by compensating for the amplitude distortions created by the imaging condition and by the incomplete reflector illumination. The amplitude effects produced by the imaging condition must be taken into account even for simple velocity models, and they are perfectly compensated by a diagonal scaling in the frequency domain. The effects produced by the incomplete reflector illumination must be taken into account in the presence of complex overburden and/or irregular recording geometries, and they are partially compensated using normalized migration or regularized inversion in the angle-domain.
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