基于软扩频的雷达通信一体化信号设计  

Design of radar and communication integration signal based on tamed spread spectrum

作　　者：冉洁 司宾强 袁立敏[2] 刘子雄 罗东琦 朱纪洪 RAN Jie;SI Binqiang;YUAN Limin;LIU Zixiong;LUO Dongqi;ZHU Jihong(School of Instrument Science and Opto-Electronics Engineering,Beijing Information Science&Technology University,Beijing 100192,China;Shijiazhuang Information Engineering Vocational College,Shijiazhuang,050035,China;Department of Computer Science and Technology,Tsinghua University,Beijing 100084,China;Department of Precision Instrument,Tsinghua University,Beijing 100084,China)

机构地区：[1]北京信息科技大学仪器科学与光电工程学院,北京100192 [2]石家庄信息工程职业学院,石家庄050035 [3]清华大学计算机科学与技术系,北京100084 [4]清华大学精密仪器系,北京100084

出　　处：《实验室研究与探索》2022年第11期145-149,共5页Research and Exploration In Laboratory

摘　　要：相比于单一雷达或通信系统雷达通信一体化,由于其共用硬件资源,具有高度集成化、小型化、频谱利用率高等优点成为当前研究热点。为解决当前雷达通信一体化信号在低信噪比环境下通信性能较差问题,提出将软扩频(TSS)技术应用于雷达通信一体化信号的设计中。通过RS序列对通信信息进行TSS编码,将扩频后的信息通过BPSK的方式调制LFM信号,形成具有通信和探测功能的TSS-BPSK-LFM一体化信号。仿真结果表明,在误码率为10-3条件下,TSS-BPSK-LFM信号比DSSS-BPSK-LFM信号的提高了约2 dB。Compared with a single radar or communication system, the radar and communication integration(RCI) system has become a research hotspot because it shares hardware resources and has the advantages of high integration, miniaturization and high spectrum efficiency. In order to solve the problem of poor communication performance of the current RCI signal in a low signal-to-noise ratio environment, the tamed spread spectrum(TSS) technology is proposed to be applied to the design of RCI signal. The communication information is coded by tamed spread spectrum through RS sequence, and then the spread spectrum information is used to modulate the LFM signal through BPSK, so as to form TSS-BPSK-LFM integrated signal with communication and detection functions. The simulation results show that when the bit error rate is 10-3, the TSS-BPSK-LFM signal is about 2 dB better than the DSSS-BPSK-LFM signal.

关 键 词：雷达通信一体化 RS序列 软扩频 线性调频 

分 类 号：TN957.51[电子电信—信号与信息处理]