Open Access

Frequency and 2D Angle Estimation Based on a Sparse Uniform Array of Electromagnetic Vector Sensors

EURASIP Journal on Advances in Signal Processing20062006:080720

https://doi.org/10.1155/ASP/2006/80720

Received: 25 April 2005

Accepted: 29 January 2006

Published: 11 May 2006

Abstract

We present an ESPRIT-based algorithm that yields extended-aperture two-dimensional (2D) arrival angle and carrier frequency estimates with a sparse uniform array of electromagnetic vector sensors. The ESPRIT-based frequency estimates are first achieved by using the temporal invariance structure out of the two time-delayed sets of data collected from vector sensor array. Each incident source's coarse direction of arrival (DOA) estimation is then obtained through the Poynting vector estimates (using a vector cross-product estimator). The frequency and coarse angle estimate results are used jointly to disambiguate the cyclic phase ambiguities in ESPRIT's eigenvalues when the intervector sensor spacing exceeds a half wavelength. Monte Carlo simulation results verified the effectiveness of the proposed method.

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Authors’ Affiliations

(1)
School of Electronic and Information Engineering, South China University of Technology
(2)
Department of Computer Science, City University of Hong Kong

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Copyright

© Ji and Kwong 2006