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

Bo WANG; Jun-wei XIE; Jing ZHANG; Jia-ang GE

doi:10.1631/FITEE.1800722

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

Regular Papers | Updated：2022-05-19

- Dot-shaped beamforming analysis of subarray-based sin-FDA
- 基于子阵sin-FDA的点状波束形成研究
- Frontiers of Information Technology & Electronic Engineering Vol. 20, Issue 10, Pages: 1429-1444(2019)
- Affiliations：
  
  Air and Missile Defense College, Air Force Engineering University, Xi'an 710051, China
  Shaanxi Vocational and Technical College of Transport, Xi'an 710018, China
- Author bio：
  
  Bo WANG, E-mail: wb_wangbo1991@163.com
- Funds：
- DOI：10.1631/FITEE.1800722
  CLC： TN973.21
- Received：14 November 2018，
  
  Revised：2019-10-10，
  
  Published：2019-10
- Accepted：
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Bo WANG, Jun-wei XIE, Jing ZHANG, et al. Dot-shaped beamforming analysis of subarray-based sin-FDA[J]. Frontiers of Information Technology & Electronic Engineering, 2019, 20(10): 1429-1444.
DOI：

Bo WANG, Jun-wei XIE, Jing ZHANG, et al. Dot-shaped beamforming analysis of subarray-based sin-FDA[J]. Frontiers of Information Technology & Electronic Engineering, 2019, 20(10): 1429-1444. DOI： 10.1631/FITEE.1800722.

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。

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.

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references

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