Robust spatial time-frequency distributions for DOA estimation using spatial averaging and directional smoothing

被引：8
|
作者：
Khan, Nabeel Ali [1 ]
Ali, Sadiq [2 ]
机构：
[1] Fdn Univ, Dept Elect Engn, Islamabad, Pakistan
[2] Univ Engn & Technol, Dept Elect Engn, Peshawar, Pakistan
来源：
SIGNAL PROCESSING | 2021年 / 180卷
关键词：
Directional Smoothing; Multi-sensor; Spatial time-frequency distributions; MUSIC; Eigen decomposition; DOA estimation;
D O I：
10.1016/j.sigpro.2020.107897
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A new method of computing robust spatial time-frequency distributions (STFDs) for signals received in a uniform linear array is presented. The proposed method adopts a two step procedure to improve the robustness of STFDs. In the first step, improved spatial averaging is performed to suppress cross-terms and noise. In the second step, the adaptive directional smoothing using signal dependent kernel is per formed to further improve the robustness of STFDs. Experimental results indicate that the proposed STFD outperforms the conventional STFDs for direction of arrival estimation. (C) 2020 Elsevier B.V. All rights reserved.
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页数：5
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