基于L型级联互素阵列的多目标源载频和到达角联合估计

doi:10.12305/j.issn.1001-506X.2023.02.02

系统工程与电子技术 ›› 2023, Vol. 45 ›› Issue (2): 336-342.doi: 10.12305/j.issn.1001-506X.2023.02.02

• 电子技术 • 上一篇

基于L型级联互素阵列的多目标源载频和到达角联合估计

赵雪成, 黄翔东, 马金英

天津大学电气自动化与信息工程学院, 天津 300072

收稿日期:2021-12-20 出版日期:2023-01-13 发布日期:2023-02-04
通讯作者: 马金英
作者简介:赵雪成(1997—), 男, 硕士研究生, 主要研究方向为阵列信号处理
黄翔东(1979—), 男, 教授, 博士, 主要研究方向为数字滤波器设计、谱分析、信号处理
马金英(1984—), 女, 博士后, 主要研究方向为谱分析、信号处理
基金资助:
青海省基础研究计划面上项目(21-0302-ZJC-0192)

Joint carrier frequency and DOA estimation for multiple target sourcesusing L-shaped unfolded co-prime array

Xuecheng ZHAO, Xiangdong HUANG, Jinying MA

School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China

Received:2021-12-20 Online:2023-01-13 Published:2023-02-04
Contact: Jinying MA

摘要/Abstract

摘要：

随着通信频段的不断拓展, 受到Nyquist意义下的阵列间隔和采样频率的限制, 多带信号载频和到达角的联合估计难度急剧增大。为突破该瓶颈, 设计了一种基于L型级联互素阵列的空时欠采样接收结构, 并结合伪噪声空间重构、信源相关性配对, 提出了一种全解析的载频和到达角的配对和无模糊联合估计方法。得益于稀疏阵列和时域欠采样, 所提结构有效增大了阵列孔径并降低了采样成本。仿真实验证明了所提载频和到达角联合估计方法在较低快拍数和信噪比的条件下, 可取得较高的估计精度。

关键词: 载频和到达角联合估计, 级联互素阵列, L型阵列, 空时欠采样

Abstract:

As the communication frequency band gradually expands, it becomes greatly difficult to design a joint carrier and direction of arrival estimator under the Nyquist-sense array inter-element spacing and sampling rate. To overcome this problem, a spatial-temporal sub-sampling architecture characterized with an L-shaped unfolded co-prime array is proposed. Further, an analytical estimator is developed via combining pseudo noise subspace construction and correlation based source pairing. Owning to sparse arrays and temporal sub-sampling, the proposed scheme not only enlarges the array aperture but also lowers the sampling cost. Numerical results demonstrate that the proposed estimator can achieve high accuracy only consuming a small number of snapshots and moderate signal to noise ratio conditions.

Key words: joint carrier frequency and direction of arrival (DOA) estimation, unfolded co-prime array, L-shaped array, spatial-temporal sub-sampling

中图分类号:

TN911.72

赵雪成, 黄翔东, 马金英. 基于L型级联互素阵列的多目标源载频和到达角联合估计[J]. 系统工程与电子技术, 2023, 45(2): 336-342.

Xuecheng ZHAO, Xiangdong HUANG, Jinying MA. Joint carrier frequency and DOA estimation for multiple target sourcesusing L-shaped unfolded co-prime array[J]. Systems Engineering and Electronics, 2023, 45(2): 336-342.

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z轴	x轴
z轴	$ {{\hat \alpha }_1}$	$ {{\hat \alpha }_2}$	$ {{\hat \alpha }_3}$
$ {{\hat \beta }_1}$	0.468 8	1.091 2	0.236 4
$ {{\hat \beta }_2}$	0.427 1	0.161 0	0.720 9
$ {{\hat \beta }_3}$	1.093 2	0.475 2	0.630 9

z轴	x轴
z轴	$ {{\hat \alpha }_1}$	$ {{\hat \alpha }_2}$	$ {{\hat \alpha }_3}$
$ {{\hat \beta }_1}$	6.518/22.86	8.498/45.03	7.243/-33.99
$ {{\hat \beta }_2}$	5.453/27.67	7.712/51.23	6.302/-39.97
$ {{\hat \beta }_3}$	7.395/20.02	9.191/40.85	8.045/-30.22

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[4]	谢荣，刘峥，刘韵佛. 基于L型阵列MIMO雷达的多目标分辨和定位[J]. Journal of Systems Engineering and Electronics, 2010, 32(1): 49-52.

基于L型级联互素阵列的多目标源载频和到达角联合估计

Joint carrier frequency and DOA estimation for multiple target sourcesusing L-shaped unfolded co-prime array

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