An approach to three-dimensional microwave imaging is proposed. Usually, because of the wide computational resource that is required by this kind of imaging that is based on the full-vector integral equations for the inverse scattering problem, linearizing approximations are employed. In this Letter, we exploit the use of the Rayleigh approximation in conjunction with a previously proposed numerical solution. We will show that the approach requires the same computational load as the one that makes use of the first-order Born approximation, but it provides an improvement in the reconstruction accuracy for a certain range of contrast values.
Three-dimensional inverse-scattering numerical solution within the Rayleigh approximation: Preliminary results
GRAGNANI, GIAN LUIGI;PASTORINO, MATTEO
1997-01-01
Abstract
An approach to three-dimensional microwave imaging is proposed. Usually, because of the wide computational resource that is required by this kind of imaging that is based on the full-vector integral equations for the inverse scattering problem, linearizing approximations are employed. In this Letter, we exploit the use of the Rayleigh approximation in conjunction with a previously proposed numerical solution. We will show that the approach requires the same computational load as the one that makes use of the first-order Born approximation, but it provides an improvement in the reconstruction accuracy for a certain range of contrast values.
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