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Effects of nonzero bandwidth on direction of arrival estimators in array signal processing

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4 Author(s)

The authors consider the impact of a small but nonzero bandwidth on narrowband direction-of-arrival (DOA) estimation using an array of sensors. They derive expressions for the DOA error for three commonly used array processing algorithms: MUSIC, ESPRIT and weighted subspace fitting (WSF). The error expressions are found by a perturbation analysis of these algorithms for small relative bandwidths of the sources. The perturbation-based error predictions are compared to the exact deviation for some special cases of interest

Published in:

Radar, Sonar and Navigation, IEE Proceedings -  (Volume:145 ,  Issue: 6 )

Date of Publication:

Dec 1998

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