Direction estimation of coherent signals based on the central symmetry of uniform circular array

被引：0
|
作者：
Liang G. [1 ,2 ,3 ]
Tian Y. [1 ,2 ]
Fu J. [1 ,2 ,3 ]
Zou N. [1 ,2 ,3 ]
机构：
[1] Acoustic Science and Technology Laboratory, Harbin Engineering University, Harbin
[2] College of Underwater Acoustic Engineering, Harbin Engineering University, Harbin
[3] Qingdao Haina Underwater Information Technology Limited Company, Qingdao
来源：
Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University | 2019年 / 40卷 / 12期
关键词：
Centrosymmetry; Coherent signals; Direction estimation; Hermitian Toeplitz matrix; Mode space; UCA;
D O I：
10.11990/jheu.201808025
中图分类号：
学科分类号：
摘要：
The direction estimation of coherent signals on uniform circular array (UCA) has always been an important topic in the array signal processing, and the resolution of existing algorithms can be further improved. A decoherence algorithm based on the central symmetry of UCA is proposed to solve this problem. First, the UCA equivalent to a virtual uniform linear array is obtained using the mode space transformation. Then, the mode space data are averaged by utilizing the central symmetry of UCA. Finally, the correlation function of the data is calculated, and the result is used to reconstruct a Hermitian Toeplitz matrix, realizing the direction estimation of coherent signals. The proposed method is simple and features a higher precision than the conventional algorithms. Simulations prove the effectiveness and superior performance of the proposed algorithm. © 2019, Editorial Department of Journal of HEU. All right reserved.
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页码：1958 / 1964
页数：6
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