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A Super-Resolution DOA Estimation Method for Fast-Moving Targets in MIMO Radar
Joint Authors
Liu, Song
Tang, Lan
Bai, Yechao
Zhang, Xinggan
Source
Mathematical Problems in Engineering
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-03-16
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
Direction of arrival (DOA) estimation is an essential problem in the radar systems.
In this paper, the problem of DOA estimation is addressed in the multiple-input and multiple-output (MIMO) radar system for the fast-moving targets.
A virtual aperture is provided by orthogonal waveforms in the MIMO radar to improve the DOA estimation performance.
Different from the existing methods, we consider the DOA estimation method with only one snapshot for the fast-moving targets and achieve the super-resolution estimation from the snapshot.
Based on a least absolute shrinkage and selection operator (LASSO), a denoise method is formulated to obtain a sparse approximation to the received signals, where the sparsity is measured by a new type of atomic norm for the MIMO radar system.
However, the denoise problem cannot be solved efficiently.
Then, by deriving the dual norm of the new atomic norm, a semidefinite matrix is constructed from the denoise problem to formulate a semidefinite problem with the dual optimization problem.
Finally, the DOA is estimated by peak-searching the spatial spectrum.
Simulation results show that the proposed method achieves better performance of the DOA estimation in the MIMO radar system with only one snapshot.
American Psychological Association (APA)
Liu, Song& Tang, Lan& Bai, Yechao& Zhang, Xinggan. 2020. A Super-Resolution DOA Estimation Method for Fast-Moving Targets in MIMO Radar. Mathematical Problems in Engineering،Vol. 2020, no. 2020, pp.1-11.
https://search.emarefa.net/detail/BIM-1194904
Modern Language Association (MLA)
Liu, Song…[et al.]. A Super-Resolution DOA Estimation Method for Fast-Moving Targets in MIMO Radar. Mathematical Problems in Engineering No. 2020 (2020), pp.1-11.
https://search.emarefa.net/detail/BIM-1194904
American Medical Association (AMA)
Liu, Song& Tang, Lan& Bai, Yechao& Zhang, Xinggan. A Super-Resolution DOA Estimation Method for Fast-Moving Targets in MIMO Radar. Mathematical Problems in Engineering. 2020. Vol. 2020, no. 2020, pp.1-11.
https://search.emarefa.net/detail/BIM-1194904
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1194904