High resolution estimation of directions of arrival in nonuniform noise

We consider the problem of direction of arrival estimation in the presence of unknown spatially nonuniform noise. A subspace separation approach is applied, based on successive array element elimination, to isolate the contribution of the noise powers. A high resolution estimator based on MUSIC is d...

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Bibliographic Details
Main Authors: Zoubir, A.M., Aouada, S.
Format: Conference Proceeding
Language:English
Subjects:
Antennas
Applied sciences
Covariance matrix
Detection, estimation, filtering, equalization, prediction
Direction of arrival estimation
Eigenvalues and eigenfunctions
Exact sciences and technology
Information, signal and communications theory
Maximum likelihood estimation
Multiple signal classification
Radiocommunications
Sensor arrays
Signal and communications theory
Signal resolution
Signal to noise ratio
Signal, noise
Spatial resolution
Telecommunications
Telecommunications and information theory
Working environment noise
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Description
Summary:We consider the problem of direction of arrival estimation in the presence of unknown spatially nonuniform noise. A subspace separation approach is applied, based on successive array element elimination, to isolate the contribution of the noise powers. A high resolution estimator based on MUSIC is described for nonuniform noise. Performance of the estimator is assessed through simulations and is compared to the Cramer-Rao bound.
ISSN:1520-6149
2379-190X
DOI:10.1109/ICASSP.2004.1326200