A Tensor-Based Covariance Differencing Method for Direction Estimation in Bistatic MIMO Radar With Unknown Spatial Colored Noise
In this paper, we investigate into direction estimation in bistatic multiple-input multiple-output (MIMO) radar in the presence of unknown spatial colored noise. Taking the stationary property of the spatial colored noise into consideration, a transform-based tensor covariance differencing method is...
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doaj-0411a9413ee94f6d8e6a03bb0d2856392021-03-29T20:17:49ZengIEEEIEEE Access2169-35362017-01-015184511845810.1109/ACCESS.2017.27494048026159A Tensor-Based Covariance Differencing Method for Direction Estimation in Bistatic MIMO Radar With Unknown Spatial Colored NoiseFangqing Wen0https://orcid.org/0000-0001-6527-4326Zijing Zhang1Gong Zhang2Yu Zhang3Xinhai Wang4Xinyu Zhang5Electronic and Information School, Yangtze University, Jingzhou, ChinaNational Laboratory of Radar Signal Processing, Xidian University, Xi’an, ChinaKey Laboratory of Radar Imaging and Microwave Photonics, Ministry of Education, Nanjing University of Aeronautics and Astronautics, Nanjing, ChinaKey Laboratory of Radar Imaging and Microwave Photonics, Ministry of Education, Nanjing University of Aeronautics and Astronautics, Nanjing, ChinaKey Laboratory of Radar Imaging and Microwave Photonics, Ministry of Education, Nanjing University of Aeronautics and Astronautics, Nanjing, ChinaSchool of Information Science and Engineering, Lanzhou University, Lanzhou, ChinaIn this paper, we investigate into direction estimation in bistatic multiple-input multiple-output (MIMO) radar in the presence of unknown spatial colored noise. Taking the stationary property of the spatial colored noise into consideration, a transform-based tensor covariance differencing method is proposed. The spatial colored noise is eliminated by forming the difference of the original and the transformed covariance matrices. To further exploit the inherent multidimensional nature, a fourth-order tensor is constructed, which helps to achieve more accurate subspace estimation. Thereafter, the traditional subspace-based methods are applied for ambiguous direction estimation. Finally, a special matrix is formed to associate the real angles with the targets. The proposed scheme does not bring virtual aperture loss, and it has complexity lower than the existing tensor-based subspace methods. Numerical simulations verify the improvement of our scheme.https://ieeexplore.ieee.org/document/8026159/Bistatic MIMO radardirection estimationspatial colored noisecovariance differencingTucker decomposition |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Fangqing Wen Zijing Zhang Gong Zhang Yu Zhang Xinhai Wang Xinyu Zhang |
spellingShingle |
Fangqing Wen Zijing Zhang Gong Zhang Yu Zhang Xinhai Wang Xinyu Zhang A Tensor-Based Covariance Differencing Method for Direction Estimation in Bistatic MIMO Radar With Unknown Spatial Colored Noise IEEE Access Bistatic MIMO radar direction estimation spatial colored noise covariance differencing Tucker decomposition |
author_facet |
Fangqing Wen Zijing Zhang Gong Zhang Yu Zhang Xinhai Wang Xinyu Zhang |
author_sort |
Fangqing Wen |
title |
A Tensor-Based Covariance Differencing Method for Direction Estimation in Bistatic MIMO Radar With Unknown Spatial Colored Noise |
title_short |
A Tensor-Based Covariance Differencing Method for Direction Estimation in Bistatic MIMO Radar With Unknown Spatial Colored Noise |
title_full |
A Tensor-Based Covariance Differencing Method for Direction Estimation in Bistatic MIMO Radar With Unknown Spatial Colored Noise |
title_fullStr |
A Tensor-Based Covariance Differencing Method for Direction Estimation in Bistatic MIMO Radar With Unknown Spatial Colored Noise |
title_full_unstemmed |
A Tensor-Based Covariance Differencing Method for Direction Estimation in Bistatic MIMO Radar With Unknown Spatial Colored Noise |
title_sort |
tensor-based covariance differencing method for direction estimation in bistatic mimo radar with unknown spatial colored noise |
publisher |
IEEE |
series |
IEEE Access |
issn |
2169-3536 |
publishDate |
2017-01-01 |
description |
In this paper, we investigate into direction estimation in bistatic multiple-input multiple-output (MIMO) radar in the presence of unknown spatial colored noise. Taking the stationary property of the spatial colored noise into consideration, a transform-based tensor covariance differencing method is proposed. The spatial colored noise is eliminated by forming the difference of the original and the transformed covariance matrices. To further exploit the inherent multidimensional nature, a fourth-order tensor is constructed, which helps to achieve more accurate subspace estimation. Thereafter, the traditional subspace-based methods are applied for ambiguous direction estimation. Finally, a special matrix is formed to associate the real angles with the targets. The proposed scheme does not bring virtual aperture loss, and it has complexity lower than the existing tensor-based subspace methods. Numerical simulations verify the improvement of our scheme. |
topic |
Bistatic MIMO radar direction estimation spatial colored noise covariance differencing Tucker decomposition |
url |
https://ieeexplore.ieee.org/document/8026159/ |
work_keys_str_mv |
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