DOA estimation of LFM sources based on time-frequency interferometer in UCA

Cui Kaibo; Chen Xi; Huang Jingjian; Wang Qingping; Yuan Naichang

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DOA estimation of LFM sources based on time-frequency interferometer in UCA

机译：基于UCA时频干涉仪的LFM源的DOA估计

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Based on the time-frequency (t-f) interferometer of the uniform circular array (UCA), a new direction of arrival (DOA) estimation algorithm of multiple linear frequency modulation (LFM) sources is proposed. Firstly, the cross smoothed pseudo Wigner-Ville distribution (SPWVD) of the elements' output is calculated and the single source t-f points are selected by using a "noise threshold" procedure and cluster based algorithm. Then, by selecting different groups of sensor pairs, the proposed algorithm can solve the phase ambiguity of the t-f points by using a focusing based algorithm. And a lookup table based ambiguity resolution algorithm is also presented to reduce the computational complexity. The simulation results illustrate that the proposed t-f interferometer can be applied to multiple wideband LFM sources and it also can improve the DOA estimation precision compared with the traditional phase interferometer and sub-band interferometer. Especially in the low signal to noise ratio (SNR) and limited snapshots situations, the estimation root mean square errors (RMSEs) of the proposed algorithm are also within 3 degrees. (C) 2019 Elsevier GmbH. All rights reserved.

机译：基于均匀圆形阵列（UCA）的时频（T-F）干涉仪，提出了多线性频率调制（LFM）源的新的到达方向（DOA）估计算法。首先，计算元件输出的交叉平滑的伪Wigner-Ville（SPWVD），并且通过使用“噪声阈值”过程和基于群集的算法选择单源T-F点。然后，通过选择不同的传感器对组，所提出的算法可以通过使用基于聚焦的算法来解决T-F点的相位模糊性。还提出了一种基于查找表的模糊分辨率算法以降低计算复杂性。仿真结果说明所提出的T-F干涉仪可以应用于多个宽带LFM源，并且与传统的相干涉仪和子带干涉仪相比，它还可以提高DOA估计精度。特别是在低信噪比（SNR）和有限的快照情况下，所提出的算法的估计根均方误差（RMS）也在3度范围内。（c）2019年Elsevier GmbH。版权所有。

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来源
《AEU: Archiv fur Elektronik und Ubertragungstechnik: Electronic and Communication》 |2019年第2019期|共10页
作者
Cui Kaibo; Chen Xi; Huang Jingjian; Wang Qingping; Yuan Naichang;
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作者单位

Natl Univ Def Technol State Key Lab Complex Electromagnet Environm Effe Changsha Hunan Peoples R China;

Natl Univ Def Technol State Key Lab Complex Electromagnet Environm Effe Changsha Hunan Peoples R China;

Natl Univ Def Technol State Key Lab Complex Electromagnet Environm Effe Changsha Hunan Peoples R China;

Natl Univ Def Technol State Key Lab Complex Electromagnet Environm Effe Changsha Hunan Peoples R China;

Natl Univ Def Technol State Key Lab Complex Electromagnet Environm Effe Changsha Hunan Peoples R China;

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原文格式 PDF
正文语种 eng
中图分类无线电电子学、电信技术;
关键词
DOA estimation; LFM source; Time-frequency interferometer; Uniform circle array; Single source t-f point; Ambiguity resolution;

机译：DOA估计;LFM源;时间频率干涉仪;均匀圆形阵列;单源T-F点;歧义分辨率;

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专利

1. DOA estimation of LFM sources based on time-frequency interferometer in UCA [J] . Cui Kaibo, Chen Xi, Huang Jingjian, AEU: Archiv fur Elektronik und Ubertragungstechnik: Electronic and Communication . 2019,第期

机译：基于UCA时频干涉仪的LFM源的DOA估计
2. 2D DOA Estimation of UCA Correlative Interferometer Based on One Dimensional Sorting Lookup Table-Two Dimensional Linear Interpolation Algorithm [J] . K. B. Cui, W. W. Wu, J. J. Huang, Radioengineering . 2017,第2期

机译：基于一维排序查询表-二维线性插值算法的UCA相关干涉仪的二维DOA估计
3. DOA Estimation of Multiple LFM Sources Using a STFT-based and FBSS-based MUSIC Algorithm [J] . K. B. Cui, X. Chen, J. J. Huang, Radioengineering . 2017,第4期

机译：使用基于STFT和基于FBSS的MUSIC算法对多个LFM源进行DOA估计
4. A DOA ESTIMATION ALGORITHM OF ACOUSTIC SOURCES BASED ON WAVEFIELD DECOMPOSITION USING UCAS [C] . Cheng Zhang, Kean Chen, Shenggang Yan International Conference in Communications and Networking in China . 2007

机译：基于UCA的波场分解的声学源DOA估计算法
5. Spatial Sparsity Based Direction of Arrival (DOA) Estimation of Acoustic Source in the Presence of Model Errors [D] . Patel, Kandarp K. 2019

机译：基于空间稀疏性的到达方向（DOA）在模型错误存在下声学来源的估计
6. Joint Estimation of Time-Frequency Signature and DOA Based on STFD for Multicomponent Chirp Signals [O] . Ziyue Zhao, Congfeng Liu 2014

机译：基于STFD的多分量线性调频信号时频签名和DOA联合估计
7. 2D DOA Estimation of UCA Correlative Interferometer Based on One Dimensional Sorting Lookup Table-Two Dimensional Linear Interpolation Algorithm [O] . Cui, K. B., Wu, W. W., Huang, J. J., 2017

机译：基于一维排序查询表-二维线性插值算法的UCA相关干涉仪的二维DOA估计

DOA estimation of LFM sources based on time-frequency interferometer in UCA

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