Constant velocity migration in the various guises of plane-wave theory |
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| Authors: | M Tygel P Hubral |
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| Institution: | (1) Geophysical Institute, Karlsruhe University, Hertzstr. 16, D-7500 Karlsruhe 21, Germany;(2) Dept. Appl. Math.-IMECC/UNICAMP, 13100 Campinas, Brazil;(3) Geophysical Institute, Karslruhe University, Hertzstr. 16, D-7500 Karlsruhe 21, Germany |
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| Abstract: | The various analytic schemes for performing a wavefield extrapolation or seismic migration from measurements upon a planar surface within a constant velocity medium are inherently related to each other. All schemes can be derived from a simple plane-wave representation of the recorded wavefield. One scheme that is very easy to conceive is based on the Radon transform. It enables one to perform a wavefield extrapolation or seismic migration by a filtered projection and a back projection of the recorded wavefield. This reveals that the theory of seismic migration as well as the theory of seismic tomography are very closely related to each other. |
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