| Popis: |
This work is devoted to acoustical imaging in semi-geodesic coordinates (or ray coordinates) for 2D Marmousi model. Unlike well-known migration methods (Reverse Time Migration, Kirchhoff migration, etc.), we do not assume the knowledge of the velocity model. Inverse data are waves at the line z = 0, generated by the boundary sources located at the same line. Our approach is based on the Boundary Control method and a relation between some Imaging condition of the forward problem and velocity image. |
