A low complexity unitary estimating signal parameter via rotational invariance techniques (ESPRIT) algorithm is presented for angle estimation in bistatic multiple-input-multiple-output (MIMO) radar. The devised algorithm only requires calculating two submatrices covariance matrix, which reduces the computation cost in comparison with subspace methods. Moreover, the signal subspace can be efficiently acquired by exploiting the NystrÖm method, which only needs flops. Thus, the presented algorithm has an essentially diminished computational effort, especially useful when , while it can achieve efficient angle estimation accuracy as well as the existing algorithms. Several theoretical analysis and simulation results are provided to demonstrate the usefulness of the proposed scheme.

中文翻译：

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双站 MIMO 雷达中计算高效的酉 ESPRIT 算法

针对双基地多输入多输出(MIMO)雷达中的角度估计，提出了一种基于旋转不变性技术(ESPRIT)的低复杂度酉估计信号参数算法。所设计的算法只需要计算两个子矩阵协方差矩阵，与子空间方法相比降低了计算成本。此外，可以通过利用 Nystr?m 方法有效地获取信号子空间，该方法只需要触发器。因此，所提出的算法本质上减少了计算量，特别是在以下情况下有用，同时它可以实现高效的角度估计精度以及现有算法。提供了一些理论分析和仿真结果来证明所提出方案的有效性。