基于对消盲区的极化敏感阵列分析与优化

doi:10.12305/j.issn.1001-506X.2023.11.11

系统工程与电子技术 ›› 2023, Vol. 45 ›› Issue (11): 3455-3464.doi: 10.12305/j.issn.1001-506X.2023.11.11

基于对消盲区的极化敏感阵列分析与优化

高宏璋¹^,², 葛松虎¹^,², 郭宇¹^,²^,*, 孟进¹^,²

1. 海军工程大学军用电气科学与技术研究所, 湖北武汉 430033
2. 海军工程大学舰船综合电力技术国防科技重点实验室, 湖北武汉 430033

收稿日期:2022-03-17 出版日期:2023-10-25 发布日期:2023-10-31
通讯作者: 郭宇
作者简介:高宏璋(1997—), 男, 硕士研究生, 主要研究方向为极化雷达信号处理
葛松虎(1988—), 男, 副研究员, 主要研究方向为数字信号处理与电磁兼容
郭宇(1989—), 男, 讲师, 主要研究方向为阵列信号处理与人工智能
孟进(1977—), 男, 研究员, 主要研究方向为电磁干扰与防护
基金资助:
国家自然科学基金(61801501);国家自然科学基金(61801502);国家自然科学基金(62241111);国家自然科学基金(62301588);国家杰出青年科学基金(52025072);湖北省自然科学基金(ZRMS202001331)

Analysis and optimization of polarization sensitive array based on cancellation blind area

Hongzhang GAO¹^,², Songhu GE¹^,², Yu GUO¹^,²^,*, Jin MENG¹^,²

1. Institute of Military Electrical Science and Technology, Naval University of Engineering, Wuhan 430033, China
2. National Key Laboratory of Science and Technology on Vessel Integrated Power System, Naval University of Engineering, Wuhan 430033, China

Received:2022-03-17 Online:2023-10-25 Published:2023-10-31
Contact: Yu GUO

摘要/Abstract

摘要：

为了提高极化敏感阵列应对任意来向、任意极化状态干扰的抑制能力, 提出了一种基于对消盲区最小化的极化敏感阵列分析和优化方法。首先, 基于干扰信号的空域信息和极化域信息, 提出了对消盲区概念, 建立了共点双极化线阵的对消盲区模型。然后, 基于对消盲区模型, 推导了对消盲区的数学表达式, 量化了阵列的有效对消范围, 并给出了一种基于微元法的求解方法。之后, 提出了基于对消盲区的极化敏感阵列优化方法, 该方法能够通过优化阵元间距使对消盲区最小化。最后, 通过数值仿真表明, 在探测阈值为12.6 dB、干扰频率为3 GHz、干噪比(interference to noise ratio, INR)为50 dB、信噪比(signal to noise ratio, SNR)为20 dB条件下, 该方法可以将四元共点双极化线阵的联合域对消盲区占比降至0.217%, 证明了优化方法的有效性。

关键词: 极化敏感阵列, 阵列优化, 干扰对消, 对消盲区

Abstract:

In order to improve the ability of polarization-sensitive arrays to cope with interference from any direction and any polarization state, a polarization-sensitive array analysis and optimization method based on cancellation blind area minimization is proposed. Firstly, based on the space information and polarization domain information of the interference signal, the concept of cancellation blind area is proposed, and the cancellation blind area model of the common-point dual-polarization linear array is established. Then, based on the cancellation blind area model, the mathematical expression of the cancellation blind area is deduced, and the effective cancellation range of the array is quantified, and a solution method based on the infinitesimal method is given. After that, a polarization-sensitive array optimization method based on the cancellation blind area is proposed, which can minimize the cancellation blind area by optimizing the spacing of the array elements. Finally, numerical simulation shows when the detection threshold is 12.6 dB, and the interference frequency is 3 GHz, and the interference to noise ratio (INR) is 50 dB and the signal to noise ratio (SNR) is 20 dB, this method can reduce the proportion of joint domain cancellation blind area of the quadruple common-point dual-polarization linear array to 0.217%, which proves the effectiveness of the optimization method.

Key words: polarization sensitive array, array optimization, interference cancellation, cancellation blind area

中图分类号:

TN974

高宏璋, 葛松虎, 郭宇, 孟进. 基于对消盲区的极化敏感阵列分析与优化[J]. 系统工程与电子技术, 2023, 45(11): 3455-3464.

Hongzhang GAO, Songhu GE, Yu GUO, Jin MENG. Analysis and optimization of polarization sensitive array based on cancellation blind area[J]. Systems Engineering and Electronics, 2023, 45(11): 3455-3464.

图/表 6

参考文献 33

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基于对消盲区的极化敏感阵列分析与优化

Analysis and optimization of polarization sensitive array based on cancellation blind area

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