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Numerical solution method for the dbar-equation in the plane
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DOI：10.1016/j.jcp.2004.01.028.png)
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Abstract
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A fast method for solving (partial derivative) over bar -equations of the form partial derivative(v) = Tpartial derivative is presented, where v and T are complex-valued functions of two real variables. The multigrid method of Vainikko [Int. Soc. Anal. Appl. Comput. 5 (2000)] is adapted to the problem with a FFT implementation. Convergence with rate (9(h) is proved for the method applied to equations of the form above. One-grid and two-grid versions of the method are implemented and their effectiveness is demonstrated on an application arising in electrical impedance tomography (EIT). (C) 2004 Elsevier Inc. All rights reserved.
Keywords:
inverse scattering
dbar-equation
FFT
electrical impedance tomography
multigrid method
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