Ce travail s' intéresse aux problèmes de reconstruction, dans le cas de l'approximation de Born enployée dans la tomographie de diffraction, et plus spécialement pour une application à la tomographie à micro-ondes. Comme on le sait, la validité de cette méthode est basée sur l'hypothèse que les caractéristiques du milieu à mesurer sont proches de celles du milieu environnant. Le but de cet article est de situer de manière précise les limites de l'approximation de Born. Les auteurs discutent en particulier aeux cas, qu'il s'agisse d'obtenir seulement la distinction d'un volume global, ou qu'il s'agisse d'obtenir une reconstruction de haute résolution.
This paper deals with Born reconstruction algorithm used in diffractive tomography; particular reference is made to microwave tomography. As well known, the validity of such reconstruction method relies on the assumption that a sufficient matching exists between the body to be explored and the surrounding medium. The aim of this work is to achieve a more accurate insight about the influence of the above said matching conditions on the performances of the method itself. By means of a computer simulation the limits of Born algorithm were quantitatively determined both in the case that only a qualitative map of the electromagnetic properties is of interest and in the case that an accurate measure of such properties is required.
On the performances of born reconstruction algorithm in microwave diffraction tomography
1985
Abstract
This paper deals with Born reconstruction algorithm used in diffractive tomography; particular reference is made to microwave tomography. As well known, the validity of such reconstruction method relies on the assumption that a sufficient matching exists between the body to be explored and the surrounding medium. The aim of this work is to achieve a more accurate insight about the influence of the above said matching conditions on the performances of the method itself. By means of a computer simulation the limits of Born algorithm were quantitatively determined both in the case that only a qualitative map of the electromagnetic properties is of interest and in the case that an accurate measure of such properties is required.| File | Dimensione | Formato | |
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Descrizione: On the performances of born reconstruction algorithm in microwave diffraction tomography
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