期刊
IET SIGNAL PROCESSING
卷 16, 期 1, 页码 106-116出版社
WILEY
DOI: 10.1049/sil2.12081
关键词
arrays; array signal processing
资金
- National Natural Science Foundation of China [61871191]
- Science Technology Planning Project of Guangzhou [201804010209, 202002 030251]
- Natural Science Foundation of Guangdong Province [2020A1515010962]
This paper presents a velocity-independent 2-D direction-of-arrival (DOA) estimation algorithm for eliminating the influence of acoustic velocity variable in underwater environment. By utilizing three parallel uniform linear arrays and matrix signal processing, the algorithm removes the acoustic velocity variable and estimates the azimuth and elevation angles of the target without the need for additional search or matching procedures. Simulation results show that the proposed algorithm outperforms traditional 2-D DOA algorithms in unknown acoustic velocity conditions, with lower computational complexity compared to velocity-independent 2-D DOA algorithms.
In order to eliminate the influence of acoustic velocity variable on the estimation accuracy when the signal propagates under water, this paper proposes a velocity-independent two-dimensional (2-D) direction-of-arrival (DOA) estimation algorithm with three parallel uniform linear arrays. Based on the double parallel linear arrays (DPLA), this algorithm adds another parallel linear array that is not in the same plane as DPLA, which is called three parallel linear arrays. By employing the matrix signal processing among those three arrays, the acoustic velocity variable can be removed from the expressions of elevation and azimuth. And the azimuth and elevation angles of the target are obtained by linear partitive operation, which does not need spectrum peak search or additional angle matching procedure. The simulation results demonstrate that the proposed algorithm performs better than the traditional 2-D DOA algorithms in the underwater environment of unknown acoustic velocity. Compared with the velocity-independent 2-D DOA algorithm, it has lower computational complexity.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据