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Inverse Thin-slab Propagator Based on Forward-scattering Renormalization for Wave-equation Tomography
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 77th EAGE Conference and Exhibition 2015, Jun 2015, Volume 2015, p.1 - 5
Abstract
We derived the Inverse thin-slab propagator in nonlinear tomographic waveform inversion in T-matrix formalism based on forward-scattering renormalization. The inverse thin-slab propagator eliminates the divergence of the inverse Born series for strong perturbations by stepwise partial summation (renormalization). It is a non-iterative, marching algorithm with only one sweep, and therefore very efficient in comparison with the iterative inversion based on the inverse-Born scattering series. This convergence and efficiency improvement has potential applications to the iterative procedure of waveform inversion. Numerical results on the convergence tests and inversion of smooth large-scale structures are given to demonstrate the validity of the theory.