基于OFDM-MIMO的抗单比特接收机低截获雷达信号设计  

OFDM⁃MIMO based low intercept radar signal design for anti monobit receiver

作　　者：马月红 周辉 韩壮志 赵辰 李乾 MA Yuehong;ZHOU Hui;HAN Zhuangzhi;ZHAO Chen;LI Qian(Hebei Provincial Collaborative Innovation Center of Transportation Power Grid Intelligent Integration Technology and Equipment,Shijiazhuang Tiedao University,Shijiazhuang 050043,China;School of Electrical and Electronic Engineering,Shijiazhuang Tiedao University,Shijiazhuang 050043,China;Department of Electronic and Optical Engineering,Shijiazhuang Campus of Army Engineering University,Shijiazhuang 050000,China;Shijiazhuang Power Supply Branch of State Grid Hebei Electric Power Co.,Ltd.,Shijiazhuang 050051,China)

机构地区：[1]石家庄铁道大学河北省交通电力网智能融合技术与装备协同创新中心,河北石家庄050043 [2]石家庄铁道大学电气与电子工程学院,河北石家庄050043 [3]陆军工程大学石家庄校区电子与光学工程系,河北石家庄050000 [4]国网河北省电力有限公司石家庄供电分公司,河北石家庄050051

出　　处：《现代电子技术》2025年第5期15-20,共6页Modern Electronics Technique

基　　金：河北省重点研发计划项目(21350701D)。

摘　　要：相比于传统的电子战测频接收机,数字化接收机对信号的检测过程集中在数字信号层面,具有较高的系统集成度,得益于在多路同时到达信号检测方面展现出的巨大优势,因而受到广泛关注。为提升己方雷达在战场上的生存能力,有效对抗敌方宽带数字化接收机的侦察,文中以典型的单比特数字接收机为研究对象,通过分析测频原理,以信号处理过程中单比特采样导致的多信号检测局限性为出发点,设计了基于信号幅度调制的OFDM-MIMO宽带低截获雷达信号。仿真及实验结果表明,所设计的雷达信号具有较高的复杂度,可有效对抗基于信号频谱峰值进行频率检测的单比特接收机侦察,单比特接收机对所设计信号的截获概率仅为20%,证明该信号具有较好的低截获特性。In comparison with the traditional electronic warfare frequency measurement receivers,digital receivers focus their signal detection process on the level of digital signals and have a high system integration.Thanks to the huge advantages demonstrated in detecting multiple simultaneous signals,they have received widespread attention.This article takes a typical monobit digital receiver as the research object to enhance the survivability of our own radar on the battlefield and effectively counter the reconnaissance of enemy broadband digital receivers.By analyzing the frequency measurement principle and taking the limitations of multi signal detection caused by monobit sampling in signal processing as the starting point,an OFDM-MIMO broadband low interception radar signal based on signal amplitude modulation is designed.The simulation and experimental results show that the designed radar signal has high complexity in the frequency domain and can effectively counter the monobit receiver reconnaissance based on frequency detection of signal spectrum peaks.The interception probability of the monobit receiver on the designed signal is only 20%,so the signal has good low interception characteristics.

关 键 词：单比特接收机 低截获信号 OFDM 混沌序列 单比特量化 调幅 

分 类 号：TN973-34[电子电信—信号与信息处理]