Abstract
Summary With the advantages of high speed of computation and low cost of computer resources, one-way propagators have been used widely in modeling and migration. On the other hand, regular one-way propagators have indeed difficulty in dealing with wide-angle problems. In this paper, we propose a wavefileld correction method to overcome the inherent angle limitation, which combines and interpolates two orthogonally propagated one-way wavefields (2D case) in the mix of space domain and wavenumber domain. The same spatial screens of the two wavefields are picked out for weighting and reconstruction. Numerical experiments show that this method is effective in solving wide-angle and turning wave problems. At last, we describe possible solution to reduce the computational cost -- to combine the method with the local-cosine-bases (LCB) beamlet propagator.
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