Skip to Main content Skip to Navigation
New interface
Journal articles

Performance Analysis of an Improved MUSIC DoA Estimator

Abstract : —This paper adresses the statistical performance of subspace DoA estimation using a sensor array, in the asymptotic regime where the number of samples and sensors both converge to infinity at the same rate. Improved subspace DoA estimators were derived (termed as G-MUSIC) in previous works, and were shown to be consistent and asymptotically Gaussian distributed in the case where the number of sources and their DoA remain fixed. In this case, which models widely spaced DoA scenarios, it is proved in the present paper that the traditional MUSIC method also provides DoA consistent estimates having the same asymptotic variances as the G-MUSIC estimates. The case of DoA that are spaced of the order of a beamwidth, which models closely spaced sources, is also considered. It is shown that G-MUSIC estimates are still able to consistently separate the sources, while this is no longer the case for the MUSIC ones. The asymptotic variances of G-MUSIC estimates are also evaluated.
Document type :
Journal articles
Complete list of metadata

Cited literature [20 references]  Display  Hide  Download
Contributor : Philippe Loubaton Connect in order to contact the contributor
Submitted on : Wednesday, August 30, 2017 - 12:11:59 PM
Last modification on : Thursday, September 29, 2022 - 2:21:15 PM


Files produced by the author(s)



Pascal Vallet, Xavier Mestre, Philippe Loubaton. Performance Analysis of an Improved MUSIC DoA Estimator. IEEE Transactions on Signal Processing, 2015, 63 (23), pp.6407 - 6422. ⟨10.1109/TSP.2015.2465302⟩. ⟨hal-01579060⟩



Record views


Files downloads