Full Text:   <767>

Summary:  <96>

CLC number: TN973.21

On-line Access: 2019-11-11

Received: 2018-11-14

Revision Accepted: 2019-06-23

Crosschecked: 2019-10-10

Cited: 0

Clicked: 595

Citations:  Bibtex RefMan EndNote GB/T7714

 ORCID:

Bo Wang

http://orcid.org/0000-0003-1434-0391

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Frontiers of Information Technology & Electronic Engineering  2019 Vol.20 No.10 P.1429-1444

http://doi.org/10.1631/FITEE.1800722


Dot-shaped beamforming analysis of subarray-based sin-FDA


Author(s):  Bo Wang, Jun-wei Xie, Jing Zhang, Jia-ang Ge

Affiliation(s):  Air and Missile Defense College, Air Force Engineering University, Xi’an 710051, China; more

Corresponding email(s):   wb_wangbo1991@163.com

Key Words:  Frequency diverse array, Subarray-based frequency diverse array, Decoupling, Dot-shaped beamforming


Bo Wang, Jun-wei Xie, Jing Zhang, Jia-ang Ge. Dot-shaped beamforming analysis of subarray-based sin-FDA[J]. Frontiers of Information Technology & Electronic Engineering, 2019, 20(10): 1429-1444.

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Abstract: 
Phased array (PA) radar is one of the most popular types of radar. In contrast to PA, the frequency diverse array (FDA) is a potential solution to suppress range-related interference because of its time-range-angle-dependent beampattern. However, the range-angle coupling inherent in the FDA transmit beampattern may degrade the output signal-to-interference-plus-noise ratio (SINR). We propose a dot-shaped beamforming method based on the analyzed four subarray-based FDAs and subarray-based planar FDAs using a sinusoidally increasing frequency offset with elements transmitting at multiple frequencies. The numerical results show that the proposed approach outperforms the existing log-FDA with logarithmical frequency offset in transmit energy focus, sidelobe suppression, and array resolution. Comparative simulation results validate the effectiveness of the proposed method.

基于子阵sin-FDA的点状波束形成研究

摘要:相控阵(phasedarray,PA)雷达是应用最为广泛的雷达类型之一。与PA相比,频率分集阵列(frequency diverse array,FDA)时间-距离-角度相关的波束特性,使其在抑制距离维相关干扰方面具有巨大潜力。但是,FDA发射波束方向图中固有的距离角耦合会降低输出信干噪比(signal-to-interference-plus-noise ratio,SINR)。基于对4种采用正弦频控函数发射多载频的子阵FDA及平面FDA的分析,提出一种点状波束形成方法。数值结果表明,该方法在传输能量聚焦、旁瓣抑制和阵列分辨率上优于现有的log-FDA。对比仿真结果验证了所提方法有效性。

关键词:频率分集阵列;子阵频率分集阵列;解耦;点状波束形成

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

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