1 Preliminary Test on a New Anti- aliasing Filter for Kirchhoff Migration Weiping Cao Sept. 18, 2009.

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Presentation transcript:

1 Preliminary Test on a New Anti- aliasing Filter for Kirchhoff Migration Weiping Cao Sept. 18, 2009

2 Conventional Aliasing Criterion dx dt mig t mig Operator aliasing criterion, irrelevant with the data

3 New Aliasing Criterion t mig event Both the migration operator and the data properties are included.

4 Point Scatter Test

5 Zero-offset Data

6 Migration Image without Anti-aliasing Filters

7 Image with Conv. Anti-aliasing Filters

8 Image with New Anti-aliasing Filters

9 Image Difference: no Filter vs new Filters