Array Geometry Impact on Music in the Presence of Spatially Distributed Sources - CentraleSupélec Accéder directement au contenu
Article Dans Une Revue Digital Signal Processing Année : 2017

Array Geometry Impact on Music in the Presence of Spatially Distributed Sources

Wenmeng Xiong
  • Fonction : Auteur
  • PersonId : 960424
José Picheral
Sylvie Marcos

Résumé

The MUltiple SIgnal Classification (MUSIC) estimator has been widely studied for a long time for its high resolution capability in the domain of the direction of arrival (DOA) estimation, with the sources assumed to be point. However, when the actual sources are spatially distributed with angular dispersion, the performance of the conventional MUSIC is degraded. In this paper, the impact of the array geometry on the DOA estimation of spatially distributed sources impinging on a sensor array is considered. Taking into account a coherently distributed source model, we establish closed-form expressions of the MUSIC-based DOA estimation error as a function of the positions of the array sensors in the presence of model errors due to the angular dispersion of the signal sources. The impact of the array geometry is studied and particular array designs are proposed to make DOA estimation more robust to source dispersion. The analytical results are validated by numerical simulations.
Fichier principal
Vignette du fichier
geometry antenne DSP v3.pdf (431.32 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-01349526 , version 1 (27-07-2016)
hal-01349526 , version 2 (30-03-2017)

Identifiants

Citer

Wenmeng Xiong, José Picheral, Sylvie Marcos. Array Geometry Impact on Music in the Presence of Spatially Distributed Sources. Digital Signal Processing, 2017, 63, pp.155-163. ⟨10.1016/j.dsp.2017.01.001⟩. ⟨hal-01349526v2⟩
195 Consultations
364 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More