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Rational Arrays for DOA Estimation

Kulkarni, Pranav and Vaidyanathan, P. P. (2022) Rational Arrays for DOA Estimation. In: 2022 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2022). IEEE , Piscataway, NJ, pp. 5008-5012. ISBN 978-1-6654-0540-9.

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Linear arrays used in array processing usually have sensor positions r_iλ/2 where λ is the wavelength of the impinging signals and r_i are integers. This paper considers rational arrays, where r_i are rational numbers. In particular, sparse rational arrays such as coprime rational arrays are introduced. In order to do this, some rational extensions of integer number theoretic concepts such as greatest common divisor and coprime numbers are required, which are introduced as well. The advantages of rational arrays are demonstrated with the help of rational coprime arrays. For example, they improve the accuracy of DOA estimation when the sensors have to be distributed with a fixed aperture constraint.

Item Type:Book Section
Related URLs:
URLURL TypeDescription
Kulkarni, Pranav0000-0002-1461-0948
Vaidyanathan, P. P.0000-0003-3003-7042
Additional Information:© 2022 IEEE. This work was supported by the Office of Naval Research grant N00014-21-1-2521, and the California Institute of Technology.
Funding AgencyGrant Number
Office of Naval Research (ONR)N00014-21-1-2521
Subject Keywords:Rational arrays, non-integer arrays, identifiability, direction of arrival (DOA) estimation, MUSIC
Record Number:CaltechAUTHORS:20220624-170739742
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Official Citation:P. Kulkarni and P. P. Vaidyanathan, "Rational Arrays for DOA Estimation," ICASSP 2022 - 2022 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2022, pp. 5008-5012, doi: 10.1109/ICASSP43922.2022.9746954
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:115255
Deposited By: Tony Diaz
Deposited On:24 Jun 2022 22:17
Last Modified:28 Jun 2022 19:12

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