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

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 metho...

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Bibliographic Details
Published in:IEEE signal processing letters 2016-05, Vol.23 (5), p.615-619
Main Authors: Shen, Qing, Liu, Wei, Cui, Wei, Wu, Siliang
Format: Article
Language:English
Subjects:
Array signal processing
co-prime array
compressive sensing
direction of arrival
Direction-of-arrival estimation
Electronic mail
Estimation
fourth-order difference co-array
Sensor arrays
Simulation
Sparse array
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Summary: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.
ISSN:1070-9908
1558-2361
DOI:10.1109/LSP.2016.2539324