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A Novel Virtual Time Reversal Method for Passive Direction of Arrival Estimation

机译:一种被动估计到达时间的虚拟时间逆转方法

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摘要

The paper presents a new method to estimate the two-dimensional (2D) direction of arrival (DOA) (the azimuth angle and the elevation angle) of electromagnetic signal emitted from a single communication station. This method is passive and accurate in the case of low signal-noise ratio (SNR) based on the virtual time reversal (VTR) theory. In order to illustrate its principle, the theoretical formulas of VTR direction finding with uniform circular array (UCA) are derived firstly. Based on these formulas, the implementation scheme for estimating azimuth angle and elevation angle passively is then provided. In the derivation, the strict mathematical proof for compressing planar search area to a curve line is proposed, reducing the complexity of VTR algorithm greatly. Finally, the simulation experiments are performed to validate the performance of VTR algorithm. The results show that the VTR method is effective and it delivers accurate DOA estimation in the case of low SNR.
机译:本文提出了一种估计从单个通信站发射的电磁信号的二维(2D)到达方向(DOA)(方位角和仰角)的新方法。基于虚拟时间反转(VTR)理论,在低信噪比(SNR)的情况下,此方法是被动的且准确的。为了说明其原理,首先推导了采用均匀圆形阵列(UCA)的VTR测向的理论公式。基于这些公式,提出了一种被动估计方位角和仰角的实现方案。在推导过程中,提出了将平面搜索区域压缩为曲线的严格数学证明,大大降低了VTR算法的复杂度。最后,通过仿真实验验证了VTR算法的性能。结果表明,VTR方法是有效的,并且在低SNR的情况下可以提供准确的DOA估计。

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  • 来源
    《Mathematical Problems in Engineering》 |2015年第2期|613692.1-613692.12|共12页
  • 作者单位

    Harbin Engn Univ, Dept Informat & Commun Engn, Harbin 150001, Peoples R China.;

    Harbin Engn Univ, Dept Informat & Commun Engn, Harbin 150001, Peoples R China.;

    Harbin Engn Univ, Dept Informat & Commun Engn, Harbin 150001, Peoples R China.;

    Harbin Engn Univ, Dept Informat & Commun Engn, Harbin 150001, Peoples R China.;

    Harbin Engn Univ, Dept Informat & Commun Engn, Harbin 150001, Peoples R China.;

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