Liu, Chun-Lin and Vaidyanathan, P. P. (2016) High Order Super Nested Arrays. In: 2016 IEEE Sensor Array and Multichannel Signal Processing Workshop (SAM). IEEE , Piscataway, NJ, pp. 1-5. ISBN 978-1-5090-2104-8 http://resolver.caltech.edu/CaltechAUTHORS:20160919-103121476
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Mutual coupling between sensors has a negative impact on the estimation of directions of arrival (DOAs). Sparse arrays such as nested arrays, coprime arrays, and minimum redundancy arrays (MRAs) have less mutual coupling than uniform linear arrays (ULAs). These sparse arrays also have a difference coarray of size O(N^2), where N is the number of sensors, and can therefore resolve O(N^2) uncorrelated source directions. The various sparse arrays proposed in the literature have their pros and cons. The nested array is practical and easy to use but has a dense ULA part which suffers from mutual coupling effects like the traditional ULA. The recently introduced super nested arrays reduce this mutual coupling problem, while maintaining the desirable hole-free O(N^2) difference coarray of the nested array. In this paper, a generalization of super nested arrays is introduced, called the Qth-order super nested array. This has all the properties of the second-order super nested array with the additional advantage that mutual coupling effects are further reduced for Q > 2. A numerical example is included to demonstrate the superior performance of these arrays.
|Item Type:||Book Section|
|Additional Information:||© 2016 IEEE. This work was supported in parts by the ONR grant N00014-15-1-2118, and the California Institute of Technology.|
|Subject Keywords:||Sparse arrays, nested arrays, coprime arrays, super nested arrays, mutual coupling, DOA estimation|
|Official Citation:||C. L. Liu and P. P. Vaidyanathan, "High order super nested arrays," 2016 IEEE Sensor Array and Multichannel Signal Processing Workshop (SAM), Rio de Janerio, Brazil, 2016, pp. 1-5. doi: 10.1109/SAM.2016.7569621 URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=7569621&isnumber=7569603|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Kristin Buxton|
|Deposited On:||19 Sep 2016 17:39|
|Last Modified:||21 Sep 2016 18:00|
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