Abstract
A novel Root-MUSIC algorithm based on cross-correlation matrix is proposed to estimate the direction of arrival (DOA) and direction of departure (DOD) for the bistatic multiple-input multiple-output (MIMO) radar. In the algorithm, the cross-correlation matrix is first constructed by using the received data which are arranged according to the transmit array and the receive array, respectively. And the DOAs and DODs are estimated independently employing cross-correlation Root-MUSIC algorithms without eigendecomposition, where the null spaces are constructed with a linear operation of the cross-correlation matrices. Secondly the pair-matching of DOAs and DODs is accomplished by solving an angle estimate optimization. The effectiveness of the proposed method is verified through numerical simulations, and it is shown that the proposed method can provide more accurate angle estimation with small computational complexity than conventional eigendecomposition algorithms.
摘要
创新点
本文针对DOA和DOD估计, 提出了一种基于互相关矩阵的双基地MIMO雷达Root-MUSIC算法。 主要创新如下:
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1.
将接收数据按照发射阵和接收阵排列, 并分别构建DOA和DOD估计互相关协方差矩阵;
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2.
利用正交投影算子计算噪声子空间, 克服特征分解带来的大运算量;
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3.
利用正交投影算子构建代价函数, 实现角度配对。
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Qin, G., Bao, D., Liu, G. et al. Cross-correlation matrix Root-MUSIC algorithm for bistatic multiple-input multiple-output radar. Sci. China Inf. Sci. 58, 1–10 (2015). https://doi.org/10.1007/s11432-014-5251-0
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DOI: https://doi.org/10.1007/s11432-014-5251-0