Accurate & efficient wavefield extrapolators using IIR F - X filters

We propose a new way of performing stable and more efficient F - X wavefield extrapolation for the application of seismic imaging and datuming via Infinite Impulse Response (IIR) F - X filters. To prove the concept, we used model reduction techniques to design the complex-valued IIR F - X extrapolation filters. Simulation results indicate that we can obtain stable designs using the proposed filters. Compared with the results obtained using FIR F - X extrapolation filters, we obtained a saving of 62% in the order of the IIR F - X extrapolation filters.