Angle estimation for bistatic MIMO radar in the presence of spatial colored noise
Angle estimation for bistatic MIMO radar in the presence of spatial colored noise
复制标题
存在空间有色噪声时双基地 MIMO 雷达的角度估计
DOI：
10.1016/j.sigpro.2016.12.017
复制
发表时间：
2017-05-01
影响因子：
4.4
通讯作者：
Zhang, Zijing
中科院分区：
文献类型：
--
作者：
Wen, Fangqing;Xiong, Xiaodong;Zhang, Zijing
研究了空间有色噪声背景下双基地多输入多输出（MIMO）雷达的角度估计问题。通过利用时间结构和多维固有结构，四阶互协方差张量制定消除空间色噪声的影响。高阶奇异值分解用于精确的信号子空间估计。然后，利用平移不变性技术获得角度。该方法可以在没有虚拟孔径损失的情况下实现估计角度的自动配对，因此具有比现有方法更好的估计性能。大量的数值实验验证了算法的有效性和改进性。
In this paper, we address the problem of angle estimation for bistatic multiple-input multiple-output (MIMO) radar in the presence of spatial colored noise. By exploiting the temporal structure and the multidimensional inherent structure, a fourth-order cross-covariance tensor is formulated to eliminate the effect of spatial colored noise. The higher-order singular value decomposition is utilized for accurate signal subspace estimation. Thereafter, angles are obtained with the shift-invariance technique. The proposed method can achieve automatic pairing of the estimated angles without any virtual aperture loss, thus it has better estimation performance than existing methods. Extensive numerical experiments verify the effectiveness and improvement of our algorithm.