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Wang X, Huang M, Wu X, et al. Direction of Arrival Estimation for MIMO Radar via Unitary Nuclear Norm Minimization. Sensors (Basel). 2017;17(4)doi: 10.3390/s17040939.
Wang, X., Huang, M., Wu, X., & Bi, G. (2017). Direction of Arrival Estimation for MIMO Radar via Unitary Nuclear Norm Minimization. Sensors (Basel, Switzerland), 17(4), . https://doi.org/10.3390/s17040939
Wang, Xianpeng, et al. "Direction of Arrival Estimation for MIMO Radar via Unitary Nuclear Norm Minimization." Sensors (Basel, Switzerland) vol. 17,4 (2017). doi: https://doi.org/10.3390/s17040939
Wang X, Huang M, Wu X, Bi G. Direction of Arrival Estimation for MIMO Radar via Unitary Nuclear Norm Minimization. Sensors (Basel). 2017 Apr 24;17(4). doi: 10.3390/s17040939. PMID: 28441770; PMCID: PMC5426935.
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Sensors (Basel). 2017 Apr 24;17(4). doi: 10.3390/s17040939.

Direction of Arrival Estimation for MIMO Radar via Unitary Nuclear Norm Minimization.

Sensors (Basel, Switzerland)

Xianpeng Wang, Mengxing Huang, Xiaoqin Wu, Guoan Bi

Affiliations

  1. State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, China. [email protected].
  2. College of Information Science and Technology, Hainan University, Haikou 570228, China. [email protected].
  3. State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, China. [email protected].
  4. College of Information Science and Technology, Hainan University, Haikou 570228, China. [email protected].
  5. State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, China. [email protected].
  6. College of Information Science and Technology, Hainan University, Haikou 570228, China. [email protected].
  7. School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore. [email protected].

PMID: 28441770 PMCID: PMC5426935 DOI: 10.3390/s17040939

Abstract

In this paper, we consider the direction of arrival (DOA) estimation issue of noncircular (NC) source in multiple-input multiple-output (MIMO) radar and propose a novel unitary nuclear norm minimization (UNNM) algorithm. In the proposed method, the noncircular properties of signals are used to double the virtual array aperture, and the real-valued data are obtained by utilizing unitary transformation. Then a real-valued block sparse model is established based on a novel over-complete dictionary, and a UNNM algorithm is formulated for recovering the block-sparse matrix. In addition, the real-valued NC-MUSIC spectrum is used to design a weight matrix for reweighting the nuclear norm minimization to achieve the enhanced sparsity of solutions. Finally, the DOA is estimated by searching the non-zero blocks of the recovered matrix. Because of using the noncircular properties of signals to extend the virtual array aperture and an additional real structure to suppress the noise, the proposed method provides better performance compared with the conventional sparse recovery based algorithms. Furthermore, the proposed method can handle the case of underdetermined DOA estimation. Simulation results show the effectiveness and advantages of the proposed method.

Keywords: direction of arrival estimation; multiple-input multiple-output radar; noncircular signal; nuclear norm minimization; unitary transformation

References

  1. Sensors (Basel). 2015 Nov 10;15(11):28271-86 - PubMed
  2. Sensors (Basel). 2016 Apr 14;16(4):null - PubMed

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