Linear aspects of tomographic velocity analysis

摘要: Prestack velocity analysis in areas of complex structure is a coupled migration and transmission inversion problem that can be analyzed from tomographic perspective. By making as few priori assumptions about the solution possible parameterizing inverse problem, generalized applicable to wide range geologic cases. Constraints modify method unique characteristics each application. The ray trace/traveltime formulation for tomography, proposed by Bishop et al. (1985), provides conceptual tool presenting features are important automated prestack structure, such (1) coupling field reflector positions, (2) nonuniform coverage model data, (3) ability perform controlled large matrices over eigenvalue range, (4) implementation constraints inversion. These may impact other ana...