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PHASE ERRORS OF FINITE‐DIFFERENCE MIGRATION*
- Source: Geophysical Prospecting, Volume 35, Issue 3, Apr 1987, p. 267 - 280
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- 27 Apr 2006
Abstract
Abstract
A quantitative analysis of the various approximations to the scalar wave equation used in seismic migration can be obtained by a study of the resulting phase errors. In the space‐time domain the effects of different modes of parameter optimization are displayed. In the space‐frequency domain the spatial derivatives may be expanded as a linear filter operator whose coefficients are determined by requiring that the resulting phase shifts agree with those that arise from planar wave solutions of the exact wave equation over a range of angles and frequencies.