Successive ESPRIT Algorithm for Joint DOA-Range-Polarization Estimation With Polarization Sensitive FDA-MIMO Radar
Successive ESPRIT Algorithm for Joint DOA-Range-Polarization Estimation With Polarization Sensitive FDA-MIMO Radar
复制标题
用于偏振敏感 FDA-MIMO 雷达联合 DOA-距离-偏振估计的连续 ESPRIT 算法
DOI：
10.1109/access.2018.2844948
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发表时间：
2018-01-01
期刊：
影响因子：
3.9
通讯作者：
Zheng, Guimei
中科院分区：
文献类型：
--
作者：
Li, Binbin;Bai, Weixiong;Zheng, Guimei
极化敏感频率和频率分集阵列（FDA） - 多输入多输出（MIMO）混合雷达是一项新兴技术。现有的极化敏感频率和频率分集阵列 - 多输入多输出雷达参数估计算法需要进行多维搜索，计算复杂度较高。为了降低计算复杂度，本文提出一种无需搜索的算法，用于估计极化敏感频率和频率分集阵列 - 多输入多输出雷达的四维参数。首先，利用接收阵列的旋转不变性，通过旋转不变子空间算法（ESPRIT）估计波达方向（DOA）。其次，基于估计出的波达方向参数，利用发射阵列的旋转不变性，通过旋转不变子空间算法进行距离估计。最后，利用极化域的旋转不变性，通过旋转不变子空间算法估计极化参数。因此，所提出的算法被称为连续旋转不变子空间算法。仿真结果证明了所提算法的有效性。
Polarization sensitive frequency and frequency diversity array (FDA)-MIMO (PSFDA-MIMO) hybrid radar is an emerging technology. The existing algorithms for parameter estimation with PSFDA-MIMO radar need multiple-dimensional searches, whose computational complexity is high. To reduce the computational complexity, in this paper, a search-free algorithm is proposed to estimate 4-D parameters with PSFDA-MIMO radar. First, direction of arrival (DOA) is estimated with the estimation of signal parameters via rotational invariance techniques (ESPRIT) algorithm using the rotational invariance of the receiving array. Second, based on the estimated DOA parameter, range estimation is obtained with the ESPRIT algorithm using the rotational invariance of the transmitting array. Finally, polarization parameters are estimated with the ESPRIT algorithm using the rotational invariance of the polarization domain. Thus, the proposed algorithm is termed the successive ESPRIT algorithm. Simulation results demonstrate the effectiveness of the proposed algorithm.