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Fast 2D DOA Estimation Algorithm by an Array Manifold Matching Method with Parallel Linear Arrays

机译:并行线性阵列的流形匹配算法快速二维DOA估计算法

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摘要

In this paper, the problem of two-dimensional (2D) direction-of-arrival (DOA) estimation with parallel linear arrays is addressed. Two array manifold matching (AMM) approaches, in this work, are developed for the incoherent and coherent signals, respectively. The proposed AMM methods estimate the azimuth angle only with the assumption that the elevation angles are known or estimated. The proposed methods are time efficient since they do not require eigenvalue decomposition (EVD) or peak searching. In addition, the complexity analysis shows the proposed AMM approaches have lower computational complexity than many current state-of-the-art algorithms. The estimated azimuth angles produced by the AMM approaches are automatically paired with the elevation angles. More importantly, for estimating the azimuth angles of coherent signals, the aperture loss issue is avoided since a decorrelation procedure is not required for the proposed AMM method. Numerical studies demonstrate the effectiveness of the proposed approaches.
机译:在本文中,解决了使用线性阵列的二维(2D)到达方向(DOA)估计问题。在这项工作中,分别针对非相干和相干信号开发了两种阵列歧管匹配(AMM)方法。所提出的AMM方法仅在已知或估计仰角的前提下估计方位角。所提出的方法省时,因为它们不需要特征值分解(EVD)或峰值搜索。此外,复杂度分析表明,与许多当前的最新技术算法相比,所提出的AMM方法具有更低的计算复杂度。由AMM方法产生的估计方位角会自动与仰角配对。更重要的是,为了估计相干信号的方位角,避免了孔径损失的问题,因为提出的AMM方法不需要解相关程序。数值研究证明了所提出方法的有效性。

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