Title :
Performance analysis of music in the presence of modeling errors due to the spatial distributions of sources
Author :
Wenmeng Xiong ; Picheral, Jose ; Marcos, Sylvie
Author_Institution :
Lss, Paris-Sud, Gif-sur-Yvette, France
Abstract :
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.
Keywords :
acoustic dispersion; acoustic radiators; acoustic signal processing; array signal processing; direction-of-arrival estimation; mean square error methods; signal classification; DOA estimation error; MUSIC estimator; angular dispersion; coherently distributed source model; direction-of-arrival localization; mean square error; modeling errors; numerical simulations; performance analysis; sensor array; spatial source distribution; Approximation methods; Arrays; Covariance matrices; Direction-of-arrival estimation; Dispersion; Estimation error; Multiple signal classification; MUSIC; array signal processing; distributed sources; model error; performance;
Conference_Titel :
Acoustics, Speech and Signal Processing (ICASSP), 2015 IEEE International Conference on
Conference_Location :
South Brisbane, QLD
DOI :
10.1109/ICASSP.2015.7178482
