Low-Complexity DOA Estimation Method Based on Joined Coprime Array

In this article, the elimination of ambiguity of a joined coprime array has been examined, with a focus on such of its properties as large aperture size and complete degree of freedom (DOF). The existing methods suffer from a high degree of computation complexity due to the loss constant characteris...

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Bibliographic Details
Published in:Journal of Telecommunications and Information Technology Vol. 1; no. 2024; pp. 11 - 16
Main Authors: Salman, Fatimah, Sabbar, Bayan
Format: Journal Article
Language:English
Published: Warsaw Instytut Lacznosci - Panstwowy Instytut Badawczy (National Institute of Telecommunications) 2024
National Institute of Telecommunications
Subjects:
Accuracy
Algorithms
Ambiguity
Antennas
Arrays
Beamforming
Complexity
Computation
Covariance matrix
Decomposition
Degrees of freedom
DOA estimation
Eigenvalues
Eigenvectors
joined coprime array
low complexity
Methods
Music
Searching
Signal processing
ISSN:1509-4553, 1899-8852
Online Access:Get full text
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Summary:In this article, the elimination of ambiguity of a joined coprime array has been examined, with a focus on such of its properties as large aperture size and complete degree of freedom (DOF). The existing methods suffer from a high degree of computation complexity due to the loss constant characteristic and high peak searching. Therefore, in this paper, a DOA estimation method for a jointed coprime array, characterized by a low degree of computational complexity, is proposed. The variance of the diagonal eigenvalues of the estimated covariance matrix is designed to enhance the accuracy of the covariance matrix of the joined coprime array. Then, the Capon beamforming methods is employed for peak searching. The simulation shows that the proposed method accomplishes accurate estimation with shorter computation times and fewer operations compared to other DOA estimation methods.
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ISSN:1509-4553
1899-8852
DOI:10.26636/jtit.2024.1.1350