A FAST F-K MIGRATION WITHOUT BOW-TIE EFFECT

In this paper,the bow-tie effect and the why and wherefore of its emerging in the process of F-K wave equation migration were probed and the way of solving such a problem was proposed correspondingly. It has been demonstrated by both the theory and the experiment that the correct use of the amplitude attenuation coefficient and the S1NC interpolation can effectively eliminate the periodical effects from the finite discrite Fourier transformation and eliminate the "pseudo-events" from interpolation. From the actual data processed we know that the technique recommended is practical and effectual. The final results from migration are improved not only in its quality but also in efficiency of F-K migration.