交替极化阵列对消盲区分析与验证

doi:10.12305/j.issn.1001-506X.2024.01.06

系统工程与电子技术 ›› 2023, Vol. 46 ›› Issue (1): 51-61.doi: 10.12305/j.issn.1001-506X.2024.01.06

• 电子技术 • 上一篇

交替极化阵列对消盲区分析与验证

高宏璋¹^,², 葛松虎¹^,², 郭宇¹^,²^,*, 刘让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:2022-08-19 出版日期:2023-12-28 发布日期:2024-01-11
通讯作者: 郭宇
作者简介:高宏璋(1997—), 男, 硕士研究生, 主要研究方向为阵列信号处理与抗干扰技术
葛松虎(1988—), 男, 副研究员, 博士, 主要研究方向为数字信号处理、电磁兼容
郭宇(1989—), 男, 讲师, 博士, 主要研究方向为阵列信号处理、人工智能
刘让(1990—), 男, 讲师, 博士, 主要研究方向为雷达信号处理与抗干扰技术
孟进(1977—), 男, 研究员, 博士, 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(62301588);国家自然科学基金(62241111);国家自然科学基金(61801501);国家自然科学基金(62271497);国家杰出青年科学基金(52025072);电磁能技术全国重点实验室基金(6142217210502);湖北省自然科学基金(ZRMS202001331)

Analysis and verification of cancellation blind area with alternate polarization array

Hongzhang GAO¹^,², Songhu GE¹^,², Yu GUO¹^,²^,*, Rang LIU¹^,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:2022-08-19 Online:2023-12-28 Published:2024-01-11
Contact: Yu GUO

摘要/Abstract

摘要：

当干扰信号的空域和极化域特征与目标信号相似时, 采用空-极化域联合抗干扰技术在消除干扰的同时也会抑制目标信号, 导致干扰对消后信干噪比(signal to interference plus noise ratio, SINR)低于雷达系统需求, 从而形成干扰对消盲区。针对这一现象, 通过在空域、极化域与空-极化域分别建立交替极化阵列对消盲区模型, 推导了对消盲区位置和大小的数学表达式, 从而给出了交替极化阵列对消盲区的数学表征方法。进而分析了交替极化阵列对消盲区的分布规律与影响因素, 研究发现阵元间距能够显著影响交替极化阵列对消盲区的分布, 在相同条件下交替极化阵列对消盲区大于共点极化阵列对消盲区, 结果表明交替极化阵列虽然通过减少天线数目降低了设备成本, 但增大了阵列的对消盲区。然后, 对消盲区模型进行了数值仿真, 仿真结果验证了理论分析。最后, 利用信道模拟器搭建了实验平台, 信道模拟实验测得的对消盲区与理论值基本一致, 再次证明了分析结论的有效性。

关键词: 交替极化阵列, 空-极化域联合抗干扰, 干扰对消, 对消盲区

Abstract:

When the space and polarization domain characteristics of the interference signal are similar to the target signal, the space-polarization joint anti-jamming technology can eliminate the interference, while it also inhibits the target signa. As a result, the signal to interference plus noise ratio (SINR) after interference cancellation is lower than the requirement of the radar system, and the interference cancellation blind area is formed. Aiming at this phenomenon, the mathematical expressions of the location and size cancellation blind area for polarization sensitive array has been derived by establishing the space model, the polarization model, and the space-polarization model of cancellation blind area for alternate polarization array. And a mathematical representation method of cancellation blind area for alternate polarization array has been proposed. Furthermore, the distribution rule and influencing factors of cancellation blind area for alternate polarization array has been analyzed. It is found that the element spacing can significantly affect the distribution of the cancellation blind area and under the same conditions the cancellation blind area of alternate polarization array is larger than the cancellation blind area of concurrent polarization array. It showed that the alternate polarization array reduces the cost of the equipment by reducing the number of antennas, but increases the cancellation blind area. Then, the numerical simulation is carried out based on the blind zone model. And the simulation results verify the theoretical analysis. Finally, an experimental platform is built by using the channel emulator. The cancellation blind area measured by channel emulator experiment is basically consistent with the theoretical value, which proves the validity of the analysis conclusion again.

Key words: alternate polarization array, space-polarization joint anti-jamming, interference cancellation, cancellation blind area

中图分类号:

TN974

高宏璋, 葛松虎, 郭宇, 刘让, 孟进. 交替极化阵列对消盲区分析与验证[J]. 系统工程与电子技术, 2023, 46(1): 51-61.

Hongzhang GAO, Songhu GE, Yu GUO, Rang LIU, Jin MENG. Analysis and verification of cancellation blind area with alternate polarization array[J]. Systems Engineering and Electronics, 2023, 46(1): 51-61.

图/表 11

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阵元间距	仿真空域盲区/(°)	实验空域盲区/(°)
0.25λ	(0, 11.3)	(0, 10.9)
0.5λ	(0, 5.6) (64.1, 90)	(0, 6.5) (64.2, 90)
0.75λ	(0, 3.8) (36.8, 47.2)	(0, 4.1) (36, 47.8)

阵元间距	方位角/(°)	仿真极化域盲区/(°)	实验极化域盲区/(°)
0.5λ	0	(73, 90)	(72, 90)
0.5λ	30	-	-
0.5λ	70	(54, 90)	(53, 90)
0.75λ	0	(76, 90)	(73, 90)
0.75λ	40	(74, 90)	(69, 90)
0.75λ	70	-	-

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交替极化阵列对消盲区分析与验证

Analysis and verification of cancellation blind area with alternate polarization array

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