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                <title xml:lang="fr">Borne de Weiss-Weinstein pour la localisation de source polarisée à l'aide d'un réseau de capteurs COLD</title>
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              <p>In the context of polarized sources localization using a cocentered orthogonal loop and dipole array, direction-of-arrival estimation performance in terms of mean square error are investigated. In order to evaluate these performance for both asymptotic and non-asymptotic scenarios (low number of snapshot and/or low signal to noise ratio) we derive closed-form expressions of the Weiss-Weinstein bound. The analysis is performed under both conditional and unconditional source signal models. We show the good ability of the proposed bound to predict the well known threshold effect. We also show the influence of the polarization parameters.</p>
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              <p>Dans cette contribution, on considère le problème de la détermination des performances ultimes, en terme d'erreur quadratique moyenne (EQM), pour l'estimation de la direction d'arrivée (DDA) d'une source polarisée à l'aide d'un réseau de capteurs particuliers. Il s'agit d'un réseau dont les capteurs sont constitués par des boucles et des dipôles orthogonaux et co-centrés, plus connu dans la littérature anglo-saxonne par la dénomination COLD (cocentered orthogonal loop and dipole).</p>
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