Reconstruction of the Electromagnetic Wavefield from Scattering Data

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1987
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Rose, James
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Review of Progress in Quantitative Nondestructive Evaluation
Center for Nondestructive Evaluation

Begun in 1973, the Review of Progress in Quantitative Nondestructive Evaluation (QNDE) is the premier international NDE meeting designed to provide an interface between research and early engineering through the presentation of current ideas and results focused on facilitating a rapid transfer to engineering development.

This site provides free, public access to papers presented at the annual QNDE conference between 1983 and 1999, and abstracts for papers presented at the conference since 2001.

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Inverse scattering theory concerns itself with determining the properties of a scatterer (e.g., the spatial variation of the scatterer’s dielectric constant and conductivity) from measured scattering data. Two general approaches to this problem exist. The first approach is a direct variational method. One starts by computing the scattering amplitude for some assumed properties of the scatterer. The resulting theoretical scattering amplitude is compared with the measured scattering data. If these results differ, then one varies the properties of the assumed scatterer and recomputes the scattered field for the new properties. This process is truncated when the measured and computed fields agree to a specified accuracy. The properties of the assumed scatterer are then supposed to coincide to within some accuracy with the unknown scatterer which generated the measured data.

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Thu Jan 01 00:00:00 UTC 1987