Affiliation:
1. Institut für Geophysik, Universität Hamburg, Bundesstraße 55, Hamburg D-20146, Germany.
Abstract
True‐amplitude migration is a new development of Kirchhoff‐type migration. By using a proper weighting function, called true‐amplitude weighting function, in the modified diffraction‐stack operator, one can obtain a reconstructed source pulse proportional to the reflection coefficient of the target reflector. According to Schleicher et al. (1993), the true‐amplitude weighting function is complex and consists of two parts. One part is the module of the complex weighting function, given by means of a 2 × 2 ray transformation submatrix called [Formula: see text]. The other is the phase factor of the complex weighting function, determined by the number of ray‐branch caustics. Thus, to obtain the true‐amplitude weighting function, one should compute the matrix [Formula: see text] as well as the number of ray‐branch caustics.
Publisher
Society of Exploration Geophysicists
Subject
Geochemistry and Petrology,Geophysics
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