摘要
射频隐身雷达是当前雷达领域的研究热点,其信号设计是实现射频隐身的关键环节。针对在雷达告警接收机(radar warning receiver,RWR)等实时宽带电子侦察设备中广泛应用的主分选算法——序列差值直方图(sequence difference histogram,SDIF)分选算法,指出SDIF算法在参差信号的分选过程中,如果无法分选出多个脉冲重复间隔值等于骨架周期T的雷达信号,将难以进行参差信号分析。提出基于参差信号组合设计的射频交错掩护抗分选信号设计方法,以相邻的3个子参差信号PRI为一组进行组合设计,设计后的参差信号就会在分选算法的不同步骤中交替掩护,导致分选算法输出信号增批、甚至输出完全错误的结果,无法有效地对雷达信号进行分选。仿真及实验表明,根据信号设计原理设计的参差信号能有效对抗分选算法,为抗PRI分选信号设计建立了理论基础。
Radio frequency(RF)stealth radar is a research hotspot in radar field at present.Signal design is the key link to achieve RF stealth.Aiming at the main sorting algorithm-sequence difference histogram sorting algorithm widely used in real-time broadband electronic reconnaissance equipment such as radar warning receivers.It is pointed out that in the sorting process of staggered signals,it is difficult to analyze the staggered signal if the SDIF algorithm cannot select multiple radar signal which the multiple pulse repetition interval values equal to the skeleton period T.Therefore,a design method of RF alternating shielding anti-sorting signal based on the combination design of staggered signals is proposed.The combination design is carried out with the three adjacent sub-staggered signals PRI as a group,and the designed staggered signals will alternate cover in different steps of the sorting algorithm,resulting in the increase of the output signals of the sorting algorithm,or even the output of completely wrong results,and then the radar signal cannot be effectively sorted.The simulation and experiment show that the staggered signal designed according to the signal design principle can effectively counter the sorting algorithm,a theoretical basis for anti-PRI sorting signal design is established.
作者
贾金伟
韩壮志
刘利民
解辉
JIA Jinwei;HAN Zhuangzhi;LIU Limin;XIE Hui(Department of Electronic and Optical Engineering,Shijiazhuang Campus,Army Engineering University,Shijiazhuang 050003,China)
出处
《火力与指挥控制》
CSCD
北大核心
2024年第5期102-110,共9页
Fire Control & Command Control
基金
基础加强计划技术领域基金资助项目(2020-××××-××-376)。
关键词
射频隐身
射频交错掩护
序列差值直方图算法
参差信号组合设计
radio frequency stealth
radio frequency staggered shield
sequential differences his-togram algorithm
staggered signal combination design
