New DOA Estimation Method for Wideband Coherent Signals in the Presence of Correlated Noise

Jin Zhang; Yun Xiang Mao; Jian Yun Zhang

doi:10.4028/www.scientific.net/AMM.263-266.157

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 263-266New DOA Estimation Method for Wideband Coherent...

New DOA Estimation Method for Wideband Coherent Signals in the Presence of Correlated Noise

Abstract:

With a uniform linear antenna array, a new direction-of-arrival (DOA) estimation method is proposed for wideband coherent signals in the presence of unknown correlated noise but with structured covariance matrix. Based on this proposed structure, i.e. Hermitian Toeplitz, a spatial differencing operation that exploits this symmetry is applied to remove the effect of the unknown noise and a new matrix is constructed accordingly at each frequency bin. Following this step, a focusing operation is performed to give the corresponding aligned covariance matrix. Finally, an eigenstructure-based DOA estimation method is applied. The validity of the method is supported by numerical simulation under various conditions.

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Periodical:

Applied Mechanics and Materials (Volumes 263-266)

Pages:

157-161

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.263-266.157

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Online since:

December 2012

Authors:

Jin Zhang, Yun Xiang Mao, Jian Yun Zhang

Keywords:

Direction of Arrival (DOA) Estimation, Uniform Linear Array (ULA), Unknown Correlated Noise, Wideband Coherent Signal

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