Open Access

Computationally Efficient Direction-of-Arrival Estimation Based on Partial A Priori Knowledge of Signal Sources

EURASIP Journal on Advances in Signal Processing20062006:019514

Received: 19 January 2005

Accepted: 25 October 2005

Published: 16 March 2006


A computationally efficient method is proposed for estimating the directions-of-arrival (DOAs) of signals impinging on a uniform linear array (ULA), based on partial a priori knowledge of signal sources. Unlike the classical MUSIC algorithm, the proposed method merely needs the forward recursion of the multistage Wiener filter (MSWF) to find the noise subspace and does not involve an estimate of the array covariance matrix as well as its eigendecomposition. Thereby, the proposed method is computationally efficient. Numerical results are given to illustrate the performance of the proposed method.


CovarianceInformation TechnologyCovariance MatrixEfficient MethodQuantum Information


Authors’ Affiliations

National Key Laboratory for Radar Signal Processing, Xidian University, Xi'an, China
Department of Electrical and Computer Engineering, Duke University, Durham, USA


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© Huang et al. 2006