Spatial de-aliasing of the 3-D Kirchhoff DMO operator
US5903515A · kind A · utility
3Cited by
6References
7Claims
0Family size
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Key dates
| Filing date | Apr 4, 1997 |
| Grant date | May 11, 1999 |
| Priority date | — |
| Expiry date | Apr 4, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V2210/522
- WIPO fieldMeasurement
- WIPO sectorInstruments
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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