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首页> 外文期刊>Signal Processing, IET >Efficient estimation of signal parameters via rotational invariance technique-based algorithm with automatic pairing for two-dimensional angle and polarisation estimation using crossed dipoles
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Efficient estimation of signal parameters via rotational invariance technique-based algorithm with automatic pairing for two-dimensional angle and polarisation estimation using crossed dipoles

机译:通过基于旋转不变性的算法进行信号参数的有效估计,该算法具有自动配对二维角度和使用交叉偶极子的极化估计

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摘要

This study addresses an efficient algorithm for joint estimation of the two-dimensional (2D) angles and polarisations of the signals impinging on a planar array of co-centred crossed dipole pairs. Based on a novel multi-layered signal decomposition scheme, the proposed algorithm estimates 2D angles and polarisations alternatively in a coarse-to-fine manner by progressively decomposing the signals into finer groups using an angle- or polarisation-based beamforming process. Such a decomposition not only partitions the signals with close parameters into separate groups, but it also reduces the power of the noise, both of which can in turn enhance the estimation accuracy. Moreover, the data are properly stacked in each stage by exploiting the intrinsic data structures so that only the 1D estimation of signal parameters via rotational invariance techniques algorithms are required, thus entailing lower computational load. Conducted simulations show that the performance of the proposed algorithm is close to that of previous works, but its computational complexity is substantially lower and is free of pairing of the estimated parameters with the multi-layered parameter estimation scheme.
机译:这项研究提出了一种有效的算法,用于联合估计入射在共心交叉偶极子对平面阵列上的信号的二维(2D)角和极化。基于一种新颖的多层信号分解方案,所提出的算法通过使用基于角度或极化的波束形成过程将信号逐步分解为更精细的组,从而以粗略到精细的方式来估计二维角度和极化。这种分解不仅将具有接近参数的信号划分为单独的组,而且还降低了噪声的功率,这两者都可以提高估计精度。此外,通过利用固有数据结构在每个阶段将数据正确堆叠,从而仅需要通过旋转不变技术算法对信号参数进行一维估计,从而需要较低的计算量。进行的仿真表明,所提出的算法的性能与先前的工作相近,但是其计算复杂度却大大降低,并且无需将估计参数与多层参数估计方案配对。

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  • 来源
    《Signal Processing, IET》 |2014年第4期|309-319|共11页
  • 作者

    Lin C.-H.; Fang W.-H.;

  • 作者单位

    Department of Electronic and Computer Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan|c|;

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  • 原文格式 PDF
  • 正文语种 eng
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