相控阵和频率分集阵双模式雷达联合目标检测

doi:10.12305/j.issn.1001-506X.2023.05.10

Abstract

Abstract:

he transmit beampattern of traditional phased array (PA) is only a function of angle, while that of the frequency diverse array (FDA) is a function of range/time-angle. Considering that they have different advantages in application with different transmit beampattern characteristics, a joint detection method based on PA and FDA dual-mode framework is proposed in this paper. The transmit beampattern characteristics of the dual-mode framework is analyzed. The superiority of combining focused transmit energy of PA and fully spatial coverage of FDA is demonstrated. A joint optimal detector of PA and FDA dual-mode radar is proposed, and the performance enhancement based on probability of detection and detector's signal-to-noise ratio in target detection compared with single mode is given. It is shown that, the PA and FDA dual-mode radar not only gets the optimal detection performance in the mainlobe, but also detects the targets in the sidelobe with the smaller signal-to-noise ratio loss.

Key words: phased array (PA), frequency diverse array (FDA), dual-mode radar, target detection

CLC Number:

TN957.52

Jingjing ZHU, Shengqi ZHU, Guisheng LIAO, Jingwei XU, Lan LAN, Cao ZENG. Joint target detection based on phased array and frequency diverse array dual-mode radar[J]. Systems Engineering and Electronics, 2023, 45(5): 1342-1350.

Figures/Tables 12

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References 30

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阵列	PA	FDA	PA和FDA双模式
子阵	$\frac{\rho \eta_1^2 L}{\sigma_n^2} $	$\frac{\rho M^2}{\sigma_n^2} $	$\frac{\rho\left(\eta_1^2 N+M N\right)}{\sigma_{\mathrm{n}}^2} $
全阵	$\frac{\rho \eta^2 N}{\sigma_n^2} $	$\frac{o N^2}{\sigma_n^2} $

参数	参数值	参数	参数值
参考频率/GHz	16	频率步进量/kHz	50
发射阵元数	10	带宽/MHz	50
接收阵元数	20	阵元间距/m	0.009 4
采样频率/MHz	100	脉冲宽度/μs	20

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Joint target detection based on phased array and frequency diverse array dual-mode radar

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阵列分析	PA	FDA	PA和FDA双模式
子阵分析	8	16	16
全阵分析	8	16	16