Migration Operators

1
Migration Operators and Impulse Responses
2
Velocity Field Laterally Invariant Single Vz
Function
Migration Of This Single Trace Moves The Energy
Back to the Point Of Diffraction
All Impulse Responses are Symmetrical
Point Diffractors
Simple Kirchhoff Time Migration
All Operators are Symmetrical
3
Velocity Field Laterally Variable
Velocity Function Slower
Velocity Function Faster
Local Velocity Field Considered Invariant at
Point of Diffraction
All Impulse Responses are Asymmetrical
Complex Kirchhoff Time Migration
All Operators are Symmetrical
4
Velocity Field Laterally Variable Diffractions
Mapped Along Ray Paths
All Impulse Responses are Asymmetrical
True Local Velocity Field at Point of Diffraction
Time and Space Variant
Kirchhoff Depth Migration
All Operators are Asymmetric and Non-Hyperbolic