Focusing method based on time reversal theory for far field targets

被引：0
|
作者：
Liu W. [1 ]
Fu Y.-Q. [1 ]
Xu D. [2 ]
机构：
[1] College of Information and Communication Engineering, Harbin Engineering University, Harbin
[2] College of Underwater Acoustic Engineering, Harbin Engineering University, Harbin
来源：
Jilin Daxue Xuebao (Gongxueban)/Journal of Jilin University (Engineering and Technology Edition) | 2016年 / 46卷 / 02期
关键词：
Far field targets focusing; Information processing; Noise vectors; Time reversal;
D O I：
10.13229/j.cnki.jdxbgxb201602046
中图分类号：
学科分类号：
摘要：
A time reversal focusing method based on transfer matrix estimation is proposed for far field targets. In this method, first, the least square estimation of the transfer matrix is obtained using detection and reflection signals of the targets, based on which the time reversal operator (TRO) is calculated. Second, the eigenvalues and corresponding eigenvectors are obtained by performing eigenvalue decomposition of TRO, where the number of targets can be confirmed by the number of the principal eigenvalues. Finally, the far target focusing can be realized through calculating the objective function of virtual observed points in the search area using noise vectors. Experimental simulations are performed and results show that the proposed method could realize time reversal focusing for far field targets effectively and accurately. The focusing performance of this method is better than that of the selective focusing method based on decomposition of TRO. © 2016, Editorial Board of Jilin University. All right reserved.
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页码：646 / 651
页数：5
相关论文
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