Novel Target Direction-of-arrival Estimation Method for Underwater Small-scale Moving Array

被引：0
作者：
Guo T. [1 ]
Wang Y.-M. [1 ]
Zhang L.-C. [1 ]
机构：
[1] School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, Shaanxi
来源：
Wang, Ying-Min (ywang@nwpu.edu.cn) | 1779年 / China Ordnance Industry Corporation卷 / 38期
关键词：
Acoustics; DOA estimation; Main feature space; Small snapshot; Small-scale moving array;
D O I：
10.3969/j.issn.1000-1093.2017.09.015
中图分类号：
学科分类号：
摘要：
The underwater small-scale moving array is limited by its small aperture and sample size for direction of arrival (DOA) estimation of coherent target. The passive synthetic aperture technique is used to solve the problem of insufficient aperture. The spectral separation of sample covariance matrix is stu-died in the case of coherent target. A DOA estimation method for coherent target based on main feature space is proposed, which uses small snapshots. In the simulation, the proposed method can still distinguish the four targets correctly when the ratio of the number of sensors to the number of samples is 5; in the water tank experiment, the above ratio is 4.8, and it can identify three adjacent targets clearly. The proposed method can achieve better resolution for coherent targets in small samples, which meets the application needs of small-scale motions array of targeting, and requires no priori information of signal source number. © 2017, Editorial Board of Acta Armamentarii. All right reserved.
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页码：1779 / 1785
页数：6
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