1. Institute of Geophysical Exploration, Hydro-China Xibei Engineering Corporation, Xi'an 710043, China; 2. School of Geosciences and Info-Physics, Central South University, Changsha 410083, China
Abstract：Based on the basic theory of the electromagnetic field, the authors deduced the wave field extrapolation formula of electric field component in horizontally stratified media. By analyzing the results of numerical simulating and migration imaging using the split-step Fourier method with designed reinforced distribution model and lining thickness model, the authors have reached some conclusions. The split-step Fourier method not only can realize the numerical simulation and migration imaging of two-dimensional non-uniform media, but also has advantages of easy programming and small amounts of calculation. Project real data have tested and verified the effectiveness and practicality of migration imaging using the split-step Fourier method.
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