Performance Analysis of Music in the Presence of Modeling Errors Dueto the Spatial Distribution of Sources

Wenmeng Xiong (1) , José Picheral (1) , Sylvie Marcos (1)

1 L2S - Laboratoire des signaux et systèmes

In this paper, the direction of arrival (DOA) localization of spatially distributed sources impinging on a sensor array is considered. The performance of the well known MUSIC estimator is studied in the presence of model errors due to angular dispersion of sources. Taking into account the coherently distributed source model proposed in [1], we establish closed-form expressions of the DOA estimation error and mean square error (MSE) due to both the model errors and the effects of a finite number of snapshots. The analytical results are validated by numerical simulations and allow to analyze the performance of MUSIC for coherently distributed sources.

Mots clés: Array signal processing; distributed sources; model error; performance; MUSIC

Domaines: Traitement du signal et de l'image [eess.SP]

Wenmeng Xiong, José Picheral, Sylvie Marcos. Performance Analysis of Music in the Presence of Modeling Errors Dueto the Spatial Distribution of Sources. 40th IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2015), Apr 2015, Brisbane, Australia. ⟨10.1109/icassp.2015.7178482⟩. ⟨hal-01633928⟩