Extension of Co-Prime Arrays Based on the Fourth-Order Difference Co-Array Concept

Abstract

An effective sparse array extension method for maximizing the number of consecutive lags in the fourth-order difference co-array is proposed, leading to a novel enhanced sparse array structure based on co-prime arrays (CPAs) with significantly increased number of degrees of freedom (DOFs). One method to exploit the increased DOFs based on nonstationary signals is also proposed, with simulation results provided to demonstrate the effectiveness of the proposed structure.

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Authors/Creators:	Shen, Q. Liu, W. (http://orcid.org/0000-0003-2968-2888) Cui, W. (http://orcid.org/0000-0003-2968-2888) Wu, S.
Copyright, Publisher and Additional Information:	© 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.
Keywords:	Array signal processing; direction-of-arrival estimation; electronic mail; estimation; sensor arrays; simulation
Dates:	Published (online): 8 March 2016 Published: May 2016
Institution:	The University of Sheffield
Academic Units:	The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Electronic and Electrical Engineering (Sheffield)
Depositing User:	Symplectic Sheffield
Date Deposited:	03 May 2016 09:19
Last Modified:	23 Mar 2018 09:08
Published Version:	http://dx.doi.org/10.1109/LSP.2016.2539324
Status:	Published
Publisher:	Institute of Electrical and Electronics Engineers
Refereed:	Yes
Identification Number:	https://doi.org/10.1109/LSP.2016.2539324

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Extension of Co-Prime Arrays Based on the Fourth-Order Difference Co-Array Concept

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