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Reconstruction d’obstacles métalliques de forme simple

Reconstruction of perfectly conducting bodies of simple shape

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Dans cet article est décrite une méthode permettant par analyse multifréquentielle du champ rétrodiffusé par un obstacle parfaitement conducteur, de reconstruire totalement ou partiellement la forme de la cible. La méthode est basée sur l’approximation de l’optique physique. Après le rappel des équations de base, l’ étude du cas de la sphère permet de déterminer les paramètres d’intérêt pratique (bande spectrale, nombre de fréquences, données bruitées). On étudie la stabilité de la reconstruction lorsque ces paramètres varient.

Abstract

In this paper, the author presents a method that allows partial or complete reconstruction of the shape of perfectly conducting body from a multifrequency analysis of its back-scattered far-field. The method is based on the physical optics approximation. The fundamental equations are first recalled, then through the example of the sphere, the parameters of practical interest (bandwidth, number of frequencies, noisy data can be assessed). The effect of a variation of these parameters on the reconstruction process are then investigated.

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Authors and Affiliations

  1. Laboratoire des Signaux et Systèmes, Groupe d’Electromagnétisme, CNRS - ESE, Plateau du Moulon, 91190, Gif-sur-Yvette, France

    Walid Tabbara

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  1. Walid Tabbara
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Communication présentée à Paris le 30 janvier 1980 lors de la journée d’étude sur laReconnaissance des formes et signatures radar organisée par la SEE.

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Tabbara, W. Reconstruction d’obstacles métalliques de forme simple. Ann. Télécommun. 36, 339–345 (1981). https://doi.org/10.1007/BF03000614

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  • DOI: https://doi.org/10.1007/BF03000614

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