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

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

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

4. 4 Point Scatter Test

5. 5 Zero-offset Data

6. 6 Migration Image without Anti-aliasing Filters

7. 7 Image with Conv. Anti-aliasing Filters

8. 8 Image with New Anti-aliasing Filters

9. 9 Image Difference: no Filter vs new Filters