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- W2094796801 abstract "We have recently presented a method in which acoustic wavefield propagation can be modeled with paraxial extrapolators [Graves and Clayton, 19871. The paraxial method is approximate and is most accurate for energy traveling within a restricted angular region centered about the extrapolation direction. Using a continued fractions expansion to represent the exact one-way dispersion relation provides a straightforward technique to derive succecsively higher order paraxial approximations. Following this approach, we have developed a 41r order paraxial operator which is accurate for propagation angles out to nearly 80’. Implementation of the resulting extrapolation system is accomplished as a catcade of two 2”’ order systems. This technique can be applied to migration as well ss modeling. For modeling problems in complex media, the effects of scattering can be included within the extrapolation system. By using the wide angle paraxial operator, we can model the energy scattered from steeply dipping structures in a more complete manner. To illustrate this, we have analyzed the problem of wavea scattered from a point diffractor." @default.
- W2094796801 created "2016-06-24" @default.
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- W2094796801 date "1988-01-01" @default.
- W2094796801 modified "2023-09-24" @default.
- W2094796801 title "Wide‐angle wave field propagation using paraxial extrapolators" @default.
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- W2094796801 doi "https://doi.org/10.1190/1.1892516" @default.
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