频控阵MIMO雷达的目标数与方位参数联合估计方法

doi:10.11959/j.issn.1000-436x.2023037

Abstract

Abstract:

To address the problem that the frequency diverse array MIMO (FDA-MIMO) radar requires a priori information on the target number when locating multiple targets and the multidimensional parameter estimation consumes a large amount of computation, a joint estimation method was proposed.The angle and distance dependence of the FDA-MIMO were utilized to transform the estimation of target number and orientation parameters into a multimodal optimization problem on the spatial spectrum, and a density-based multimodal differential evolution algorithm was designed to solve it, which reduced the computational load and did not require a separate target number estimation algorithm.Simulation results show that the proposed method outperformed the existing methods in estimating the target number and orientation parameters.It overcomes the application limitations of the existing orientation parameter estimation methods and can obtain optimal estimation results without quantization error.

Key words: frequency diverse array, joint detection and estimation, source number estimation, angle estimation, range estimation

CLC Number:

TN911.7

Helin SUN, Hongyuan GAO, Yanan DU, Jianhua CHENG, Yapeng LIU. Joint estimation method of target number and orientation parameters for FDA-MIMO radar[J]. Journal on Communications, 2023, 44(2): 41-51.

Figures/Tables 13

参数	参数值
个体数P	600
最大迭代数G	200
终止聚类条件 $\tilde{G}$	50
半径参数ε	$0.1 \times 1000^{- \frac{g}{G}}$
数量参数κ	3
比例参数 $ℏ$	0.8
步长参数μ	0.5
判决门限η	$\sqrt{2}$

参数设置方法		目标数		角度			距离/m
ε	μ	目标数	0.1°	0.01°	0.001°	10	1	0.1
	0.1	0.36	0.35	0.26	0.19	0.35	0.29	0.18
$0.1 \times 1000^{- \frac{g}{G}}$	$0 . 5$	$1 . 00$	$1 . 00$	$0 . 72$	$0 . 49$	$1 . 00$	$0 . 73$	$0 . 49$
	1.5	0.75	0.74	0.55	0.39	0.74	0.56	0.38
	0.1	0.31	0.30	0.25	0.19	0.29	0.25	0.18
$1 \times 1000^{- \frac{g}{G}}$	0.5	0.97	0.97	0.77	0.51	0.97	0.74	0.54
	1.5	0.61	0.60	0.47	0.33	0.60	0.46	0.34
	0.1	0.18	0.16	0.09	0.09	0.17	0.09	0.08
$1 \times 100^{- \frac{g}{G}}$	0.5	0.22	0.22	0.14	0.13	0.22	0.12	0.11
	1.5	0.18	0.14	0.08	0.07	0.15	0.09	0.08

References ［20］

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参数	参数值
载波频率 f_c/GHz	10
频率步进量Δf /kHz	15
发射阵元数M	4
接收阵元数N	4
阵元间距d /m	0.015
快拍数T	30

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[3]	Xianpeng WANG,Yuehao GUO,Mengxing HUANG,Chong SHEN,Chunjie CAO,Wenlong FENG. Robust angle estimation method for noncircular targets in MIMO radar with mutual coupling [J]. Journal on Communications, 2019, 40(7): 144-150.
[4]	Zhi-dong ZHENG,Jian-yun ZHANG,Jin-you QU,Xiu-qing LIN. Novel method for angle estimating of bistatic MIMO radar [J]. Journal on Communications, 2012, 33(12): 123-132.

Joint estimation method of target number and orientation parameters for FDA-MIMO radar

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References ［20］

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