Robust Sparse Bayesian Learning for Off-Grid DOA Estimation With Non-Uniform Noise
Robust Sparse Bayesian Learning for Off-Grid DOA Estimation With Non-Uniform Noise
复制标题
用于非均匀噪声离网 DOA 估计的鲁棒稀疏贝叶斯学习
DOI:
10.1109/access.2018.2877727
复制
发表时间:
2018
期刊:
影响因子:
3.9
通讯作者:
Huang Mengxing
中科院分区:
文献类型:
--
作者:
Wang Huafei;Wang Xianpeng;Wan Liangtian;Huang Mengxing
The performance of traditional sparse representation-based direction-of-arrival (DOA) estimation algorithm is substantially degraded in the presence of non-uniform noise and off-grid gap caused by the discretization processes. In this paper, a robust sparse Bayesian learning method is proposed for off-grid DOA estimation with non-uniform noise. In the proposed method, the covariance matrix of non-uniform noise is reconstructed by a modified inverse iteration method. Then, the discrete sampling grid points in the spatial domain are treated as dynamic parameters, and the expectation-maximization algorithm is used to iteratively refine the position of the discretization grid points. This refinement procedure is implemented by solving a polynomial. The simulation results indicate that the proposed method can maintain excellent DOA estimation performance with uniform or non-uniform noise. Furthermore, it can also achieve satisfactory performance under a coarse grid condition.
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DOI:
10.1109/radar.2016.8059247
发表时间:
2016-10
期刊:
2016 CIE International Conference on Radar (RADAR)
影响因子:
--
作者:
Xianpeng Wang;Mengxing Huang;G. Bi
通讯作者:
Xianpeng Wang;Mengxing Huang;G. Bi
影响因子:
1.3
作者:
Bin Liao;Guisheng Liao;Jun Wen
通讯作者:
Bin Liao;Guisheng Liao;Jun Wen
影响因子:
2.5
作者:
N. Hurt
通讯作者:
N. Hurt
影响因子:
4.4
作者:
Nan Hu;Z. Ye;Dongyang Xu;Shenghong Cao
通讯作者:
Nan Hu;Z. Ye;Dongyang Xu;Shenghong Cao
影响因子:
3.9
作者:
D. Madurasinghe
通讯作者:
D. Madurasinghe