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Decoupled estimation of angular parameters for coherently distributed sources

Estimation découplée des paramètres angulaires pour des sources distribuées avec cohérence

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Abstract

In this paper, we consider the problem of estimating the direction-of-arrivals (doas) and angular spreads of uncorrelated coherently distributed sources. The proposed methods enable a decoupled estimation of the doas from that of the angular spreads of sources. Compared with existing algorithms, the proposed algorithms improve the robustness to the mismodeling of the spatial distribution of the scatterers. They allow an unambiguous doas estimation and don’t need the a priori knowledge of the azimutal power distribution. Furthermore, the proposed techniques work even in the case where the different sources have different angular distribution shape.

Résumé

Dans cet article on considère le problème d’estimation des directions d’arrivée (dda) et des étalements angulaires de sources décorrélées distribuées avec cohérence. Les techniques proposées permettent d’estimer ces paramètres angulaires de façon séparée. Par comparaison avec des techniques existantes, ces nouvelles méthodes n’exigent pas la connaissance des distributions angulaires des réflecteurs, en particulier pour l’estimation des dda. Notons que ces méthodes sont capables de fonctionner lorsque les différentes sources ont des distributions azimutales différentes, contrairement aux méthodes existantes.

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Authors and Affiliations

  1. IREENA École polytechnique, University of Nantes, BP 50609, 44306, Nantes, France

    Ahmed Zoubir & Mohamed M. Ould Haiballa

  2. SSC, FST, University of Sidi Mohamed Ben Abdellah, Route Immouzer, BP 2202, Fez, Morocco

    Yide Wang & Mohamed M. Ould Haiballa

  3. LATTIS, INSA, 135 avenue de Rangueil, 31077, Toulouse Cedex 4, France

    Pascal Chargé

Authors
  1. Ahmed Zoubir
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  2. Yide Wang
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  3. Mohamed M. Ould Haiballa
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  4. Pascal Chargé
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Correspondence to Ahmed Zoubir.

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Zoubir, A., Wang, Y., Ould Haiballa, M.M. et al. Decoupled estimation of angular parameters for coherently distributed sources. Ann. Telecommun. 62, 1171–1184 (2007). https://doi.org/10.1007/BF03253311

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  • DOI: https://doi.org/10.1007/BF03253311

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