Reverse-time-migration based inverse scattering using the dyadic parabolic decomposition of phase space
Maarten V. deHoop
given at esi12 (17.10.12 10:00)
Reverse-time-migration (RTM) based inverse scattering can be
represented by a Fourier integral operator associated with a canonical
graph. We discuss a universal oscillatory integral representation of
these operators, in particular, with a view to caustics. With this
representation, we develop a fast algorithm for RTM based inverse
scattering using the dyadic parabolic decomposition of phase space
underlying the construction of curvelets or wave packets, and low-rank
separated representations. We then adapt the algorithm to the case of
passive-source teleseismic waves.
Joint research with F. Andersson, G. Uhlmann, A. Vasy and H. Wendt.