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首页> 外文期刊>Signal processing >Two-stage DOA estimation of independent and coherent signals in spatially coloured noise
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Two-stage DOA estimation of independent and coherent signals in spatially coloured noise

机译：空间彩色噪声中独立和相干信号的两阶段DOA估计

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摘要

A novel fourth order cumulant-based matrix reconstruction algorithm is presented for direction of arrival (DOA) estimation when both independent and coherent signals coexist in the presence of spatially coloured noise. The method operates in two stages. By exploiting the orthogonality between subspaces, the DOA estimates of uncorrelated sources are first obtained, then the independent components are eliminated by reconstructing the corresponding cumulant matrix. Secondly, a series of matrix reconstructions are performed, then the remaining coherent sources are resolved from the reconstructed matrix which has been rank restored. The resultant algorithm can resolve more signals than array elements with higher accuracy and better classification of signal type than previous methods. Simulation results demonstrate the validity and efficiency of the proposed method.
机译：当空间色噪声存在时，独立信号和相干信号同时存在时，提出了一种新颖的基于四阶累积量的矩阵重构算法，用于到达方向（DOA）估计。该方法分两个阶段进行。通过利用子空间之间的正交性，首先获得不相关源的DOA估计，然后通过重构相应的累积矩阵来消除独立分量。其次，执行一系列的矩阵重构，然后从已进行秩恢复的重构矩阵中解析出剩余的相干源。与以前的方法相比，所得算法与数组元素相比可以解析更多的信号，具有更高的精度和更好的信号类型分类。仿真结果证明了该方法的有效性和有效性。

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  • 来源
    《Signal processing》 |2016年第11期|350-359|共10页
  • 作者

    Yuexian Wang; Matthew Trinkle; Brian W.-H. Ng;

  • 作者单位

    University of Adelaide Radar Research Centre, School of Electrical and Electronic Engineering, The University of Adelaide, South Australia, SA 5005, Australia;

    University of Adelaide Radar Research Centre, School of Electrical and Electronic Engineering, The University of Adelaide, South Australia, SA 5005, Australia;

    University of Adelaide Radar Research Centre, School of Electrical and Electronic Engineering, The University of Adelaide, South Australia, SA 5005, Australia;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Direction of arrival (DOA); Coherent signals; Coloured noise; Matrix reconstruction;

    机译：到达方向（DOA）;相干信号;有色噪音;矩阵重建;

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