低复杂度雷达嵌入式通信波形设计方法  

Radar-embedded communication waveform design with low complexity

作　　者：张澄安 李保国[1] 王翔 徐强 ZHANG Cheng’an;LI Baoguo;WANG Xiang;XU Qiang(School of Electronic Science,National University of Defense Technology,Changsha 410073,China)

机构地区：[1]国防科技大学电子科学学院,长沙410073

出　　处：《航空学报》2023年第1期273-285,共13页Acta Aeronautica et Astronautica Sinica

基　　金：湖南省自然科学基金(2019JJ10004)。

摘　　要：雷达嵌入式通信(REC)是一种利用射频(RF)标签或应答器生成通信信号,并以雷达后向散射回波信号为背景,将通信信号隐藏在雷达散射回波中的隐蔽通信方式。为了满足RF标签简单小巧便携的要求,提出了一种低复杂度的REC通信波形生成算法,可以大大减轻RF标签应答器的运算压力。此外,通过仿真分析,所提算法并没有以REC波形的可靠性能和低截获概率(LPI)性能为代价,相反通过调整波形参数可以大大降低截获接收机的处理增益,以此来增加REC波形的LPI性能。Radar-Embedded Communication(REC)is a covert communication method that uses Radio Frequency(RF)tags or transponders to generate communication signals,and hides the communication signals in the radar backscatter echo with the radar backscatter echo signal as the background.To meet the requirements for simple,compact and portable RF tags,a low-complexity REC communication waveform generation algorithm is proposed,which can greatly reduce the computational pressure of the RF tag transponder.Simulation analysis shows that the proposed algorithm can greatly reduce the processing gain of the interception receiver by adjusting waveform parameters,and thus increase the Low Probability of Interception(LPI)performance of the REC waveform without sacrificing the reliability and LPI of the REC waveform.

关 键 词：雷达嵌入式通信 波形设计 LPI通信 低复杂度 处理增益 

分 类 号：V11[航空宇航科学与技术—人机与环境工程] TN973.2[电子电信—信号与信息处理]