VHF/UHF通信电台接收链路中的干扰抑制合并方法

doi:10.12305/j.issn.1001-506X.2022.03.34

系统工程与电子技术 ›› 2022, Vol. 44 ›› Issue (3): 1014-1021.doi: 10.12305/j.issn.1001-506X.2022.03.34

VHF/UHF通信电台接收链路中的干扰抑制合并方法

吴灏^1,^2,*, 康颖^1,², 葛松虎^1,², 李亚星^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:2021-01-04 出版日期:2022-03-01 发布日期:2022-03-10
通讯作者: 吴灏
作者简介:吴灏(1988—), 男, 副研究员, 博士, 主要研究方向为通信信号处理及智能感知|康颖(1994—), 男, 博士研究生, 主要研究方向为通信智能感知|葛松虎(1987—), 男, 副研究员, 博士, 主要研究方向为数字信号处理及通信抗干扰|李亚星(1988—), 男, 讲师, 博士, 主要研究方向为自适应信号处理与智能感知|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(61801502);国家自然科学基金(61801501);国防科技重点实验室稳定支持科研项目(6142217200105);国家杰出青年科学基金(52025072)

Interference rejection combining method in receive chain of VHF/UHF communication radio

Hao WU^1,^2,*, Ying KANG^1,², Songhu GE^1,², Yaxing LI^1,², Jin MENG^1,²

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:2021-01-04 Online:2022-03-01 Published:2022-03-10
Contact: Hao WU

摘要/Abstract

摘要：

考虑一发两收甚高频/特高频(very high frequency/ultra high frequency, VHF/UHF)通信电台接收链路存在的同频强干扰, 针对传统抗干扰方法需精确估计信道参数的难题, 提出一种基于决策的干扰抑制合并(decision-based interference rejection combining, D-IRC)方法。通过解析式定量分析了D-IRC输出信干噪比(signal to interference plus noise ratio, SINR)与输入SINR的关系, 定义了干扰抑制功率失效区, 并给出了D-IRC最优输出的选择策略。仿真结果表明, 在信道参数未知场景下, D-IRC方法的决策输出性能优于传统干扰抑制合并(interference rejection combining, IRC)和最大比合并(maximal ratio combining, MRC)方法, 同时失效区测度关系与理论分析一致。研究结果可为对抗环境下VHF/UHF电台抗干扰提供理论参考。

关键词: VHF/UHF电台, 信道估计, 干扰抑制合并, 选择策略

Abstract:

Considering the strong co-frequency interference in the receiving link of very high frequency/ultra high frequency(VHF/UHF) communication station with one transmitter and two receivers, aiming at the problem that the traditional anti-interference methods need to accurately estimate the channel parameters, a decision-based interference rejection combining (D-IRC) method is proposed. The relationship between the output signal to interference plus noise ratio (SINR) of D-IRC and the input SINR is quantitatively analyzed by analytical formulae, the interference suppression power failure area is defined, and the selection strategy of the optimal output of D-IRC is given. The simulation results show that under the scenario of unknown channel parameters, the decision output performance of the D-IRC method is better than the traditional interference rejection combining (IRC) and maximal ratio combining (MRC) methods, and the measurement relationship of failure zone is consistent with the theoretical analysis. The research results can provide a theoretical reference for the anti-jamming of VHF/UHF radio in the counter environment.

Key words: VHF/UHF radio, channel estimation, interference rejection combining (IRC), selection strategy

中图分类号:

TN911

吴灏, 康颖, 葛松虎, 李亚星, 孟进. VHF/UHF通信电台接收链路中的干扰抑制合并方法[J]. 系统工程与电子技术, 2022, 44(3): 1014-1021.

Hao WU, Ying KANG, Songhu GE, Yaxing LI, Jin MENG. Interference rejection combining method in receive chain of VHF/UHF communication radio[J]. Systems Engineering and Electronics, 2022, 44(3): 1014-1021.

图/表 9

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参数	数值
信道类型	Rayleigh衰落
多径数目	3
多径延时/μs	[0, 3, 6]
多径增益/dB	[0, -5, -10]
SNR/dB	20

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VHF/UHF通信电台接收链路中的干扰抑制合并方法

Interference rejection combining method in receive chain of VHF/UHF communication radio

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