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Comparison of image reconstruction by using near-field and far-field data for an imperfect conductor

✍ Scribed by Chien-Ching Chiu; Wei-Ting Chen

Publisher: John Wiley and Sons
Year: 2001
Tongue: English
Weight: 118 KB
Volume: 11
Category: Article
ISSN: 1096-4290
DOI: 10.1002/mmce.1002

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✦ Synopsis

Image reconstruction by using near-field and far-field data for an imperfectly conducting cylinder is investigated. A conducting cylinder of unknown shape and conductivity scatters the incident wave in free space and the scattered near and far fields are measured. By using measured fields, the imaging problem is reformulated into an optimization problem and solved by the genetic algorithm. Numerical results show that the convergence speed and final reconstructed results by using near-field data are better than those obtained by using far-field data. This work provides both comparative and quantitative information.

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