Spatial de-aliasing of the 3-D Kirchhoff DMO operator

Details Spatial de-aliasing of the 3-D Kirchhoff DMO operator Spatial de-aliasing of the 3-D Kirchhoff DMO operator

1997-04-04

1999-05-11

Moskowitz, Nelson

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Land-reflection type

367 21, 367 53, 367 63, G01V1/20;1/28;1/36

Patent

active

059035153

ABSTRACT:
A method for generating an unaliased 3-D DMO operator using two dimensional sampling theory to the spatial traverse of the operator as well as to the temporal axis. First a continuous DMO operator is generated along the line segment connecting a source and a receiver directed at an arbitrary azimuth relative to a biaxial output grid. The operator is discretized at spaced-apart sample points along the DMO aperture segment, the spacing being equal to or less than the output grid dimensions. A exponentially tapered sinc filter function is applied to the samples which are then interpolated onto the output grid.

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