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

Abstract

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

CLC Number:

TN911.72

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.

Figures/Tables 8

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References 25

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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

[1]	XU Le, WU Riheng, ZHANG Xiaofei. 2D-DOA and frequency estimation for L-shaped array via reduced-dimensional MUSIC [J]. Systems Engineering and Electronics, 2019, 41(1): 1-8.
[2]	LIANG Hao, CUI Chen, DAI Lin, YU Jian. Reduced-dimensional DOA estimation based on sparse reconstruction in MIMO radar with L-shaped array [J]. Systems Engineering and Electronics, 2015, 37(12): 2725-2732.
[3]	CHEN Genhua, CHEN Baixiao, YANG Minglei, ZHENG Guimei. High accuracy 2D direction finding using interferometric-like L-shaped array [J]. Journal of Systems Engineering and Electronics, 2012, 34(1): 17-23.

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

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