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Super Nested Arrays: Sparse arrays with Less Mutual Coupling than Nested Arrays

Liu, Chun-Lin and Vaidyanathan, P. P. (2016) Super Nested Arrays: Sparse arrays with Less Mutual Coupling than Nested Arrays. In: 2016 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP). IEEE , Piscataway, NJ, pp. 2976-2980. ISBN 978-1-4799-9988-0. http://resolver.caltech.edu/CaltechAUTHORS:20160322-153051833

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Abstract

In array processing, mutual coupling between sensors has an adverse effect on the estimation of parameters (e.g., DOA). Sparse arrays, such as nested arrays, coprime arrays, and minimum redundancy arrays (MRAs), have reduced mutual coupling compared to uniform linear arrays (ULAs). With N denoting the number of sensors, these sparse arrays offer O(N^2) freedoms for source estimation because their difference coarrays have O(N^2)-long ULA segments. These arrays have different shortcomings: coprime arrays have holes in the coarray, MRAs have no closed-form expressions, and nested arrays have relatively large mutual coupling. This paper introduces a new array called the super nested array, which has all the good properties of the nested array, and at the same time reduces mutual coupling significantly. For fixed N, the super nested array has the same physical aperture, and the same hole-free coarray as does the nested array. But the number of sensor pairs with separation λ/2 is significantly reduced. Many theoretical properties are proved and simulations are included to demonstrate the superior performance of these arrays.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1109/ICASSP.2016.7472223 DOIArticle
http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=7472223PublisherArticle
Additional Information:© 2016 IEEE. This work was supported in parts by the ONR grant N00014-15-1-2118, and the California Institute of Technology.
Funders:
Funding AgencyGrant Number
Office of Naval Research (ONR)N00014-15-1-2118
CaltechUNSPECIFIED
Subject Keywords:Nested arrays, coprime arrays, super nested arrays, mutual coupling, DOA estimation
Record Number:CaltechAUTHORS:20160322-153051833
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20160322-153051833
Official Citation:C. L. Liu and P. P. Vaidyanathan, "Super nested arrays: Sparse arrays with less mutual coupling than nested arrays," 2016 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Shanghai, China, 2016, pp. 2976-2980. doi: 10.1109/ICASSP.2016.7472223
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:65599
Collection:CaltechAUTHORS
Deposited By: Kristin Buxton
Deposited On:22 Mar 2016 22:39
Last Modified:24 May 2016 16:51

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