A Novel ULA-Difference-Coarray-Based DOA Estimation Method for General Coherent Signals
Joint Authors
Chen, Zhang
Wu, Hao
Liu, Yongxiang
Source
Mathematical Problems in Engineering
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-11-03
Country of Publication
Egypt
No. of Pages
13
Main Subjects
Abstract EN
In this article, a difference-coarray-based direction of arrival (DOA) method is introduced, which utilizes the uniform linear array (ULA) in a novel fashion to address the problem of DOA estimation for coherent signals.
Inspired by the coarray-based estimators employed in cases of sparse arrays, we convert the sample covariance matrix of the observed signals into the difference coarray domain and process the signals using a spatial smoothing technique.
The proposed method exhibits good accuracy and robustness in both the uncorrelated and coherent cases.
Numerical simulations verify that the ULA difference coarray- (UDC-) based method can achieve good DOA estimation accuracy even when the SNR is very low.
In addition, the UDC-based method is insensitive to the number of snapshots.
Under extremely challenging conditions, the proposed UDC-ES-DOA method is preferred because of its outstanding robustness, while the UDC-MUSIC method is suitable for most moderate cases of lower complexity.
Due to its demonstrated advantages, the proposed method is a promising and competitive solution for practical DOA estimation, especially for low-SNR or snapshot-limited applications.
American Psychological Association (APA)
Chen, Zhang& Wu, Hao& Liu, Yongxiang. 2020. A Novel ULA-Difference-Coarray-Based DOA Estimation Method for General Coherent Signals. Mathematical Problems in Engineering،Vol. 2020, no. 2020, pp.1-13.
https://search.emarefa.net/detail/BIM-1193316
Modern Language Association (MLA)
Chen, Zhang…[et al.]. A Novel ULA-Difference-Coarray-Based DOA Estimation Method for General Coherent Signals. Mathematical Problems in Engineering No. 2020 (2020), pp.1-13.
https://search.emarefa.net/detail/BIM-1193316
American Medical Association (AMA)
Chen, Zhang& Wu, Hao& Liu, Yongxiang. A Novel ULA-Difference-Coarray-Based DOA Estimation Method for General Coherent Signals. Mathematical Problems in Engineering. 2020. Vol. 2020, no. 2020, pp.1-13.
https://search.emarefa.net/detail/BIM-1193316
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1193316