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Analysis of the influence of radar wave depolarisation phenomena on polarimetric sar imaging

Analyse de l’influence des phénomènes de dépolarisation des ondes radar sur les images ROS polarimétriques

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Abstract

This paper first analyses the evolution of the polarisation state of electromagnetic waves propagating through any medium. This is done by a novel formalism which is based on the characteristic polarisations concept. This formalism is then generalised to the up and down path,i.e. to radar systems. This study is then applied to the tropospheric and the ionospheric media, which are involved insar (synthetic aperture radar) imaging. Finally, we focus on their influence on the value of some polarimetric tools, which have been shown to be useful insar images analysis.

Résumé

Cet article analyse dans un premier temps l’évolution de l’état de polarisation d’une onde traversant un milieu quelconque. Un formalisme basé sur la notion de polarisation caractéristique est ensuite proposé puis étendu au cas d’un système radar, c’est- à -dire au cas d’une propagation aller puis retour. Cette étude théorique est alors appliquée à l’étude des milieux troposphérique et ionosphérique impliqués dans l’imagerieros (radar à ouverture synthétique), et plus précisément à l’évaluation de l’influence qu’ils peuvent avoir sur la valeur de différents paramètres d’analyse polarimétrique des images.

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Authors and Affiliations

  1. URA CNRS 834, Structures Rayonnantes, Laboratoire Composants et Systèmes pour Télécommunications INSA, 20, avenue des Buttes de Coësmes, F-35043, Rennes cedex, France

    Yann LE Helloco, Bernard Uguen & Gérard Chassay

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  1. Yann LE Helloco
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  2. Bernard Uguen
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  3. Gérard Chassay
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LE Helloco, Y., Uguen, B. & Chassay, G. Analysis of the influence of radar wave depolarisation phenomena on polarimetric sar imaging. Ann. Télécommun. 52, 264–274 (1997). https://doi.org/10.1007/BF02996069

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  • DOI: https://doi.org/10.1007/BF02996069

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