基于脉组宽捷变的射频隐身雷达信号设计技术  

Design Technology of RF Stealth Radar Signal Based on Pulse Group Width Agility

作　　者：贾金伟 刘利民 韩壮志 解辉 JIA Jinwei;LIU Limin;HAN Zhuangzhi;XIE Hui(Department of Electronic and Optical Engineering Shijiazhuang Campus Army Engineering University,Shijiazhuang 050000,China)

机构地区：[1]陆军工程大学石家庄校区电子与光学工程系,石家庄050000

出　　处：《电光与控制》2024年第7期73-80,共8页Electronics Optics & Control

摘　　要：射频隐身雷达能够从根本上提高雷达电子防御能力,是当前航空装备研究热点,而其重点是射频隐身信号设计。抗分选信号是一种重要的射频隐身信号,现在射频隐身信号设计领域的难点之一就是抗分选信号设计。通过分析雷达告警接收机等宽带实时电子侦察设备的主分选算法——序列差值直方图分选算法,指出该算法对于信号的脉冲重复间隔(PRI)大范围快速变化时会出现PRI估计错误的失效原理,提出基于脉组捷变的射频隐身雷达抗分选信号设计方法,即通过信号的脉组PRI大步进捷变,可以使RWR等实时宽带电子侦察设备的主分选算法输出出现较大误差,甚至完全错误。仿真及实验证明,基于上述方法设计的信号能有效对抗宽带实时电子侦察设备的主分选算法,实现雷达抗分选的目标。Radio Frequency(RF)stealth radar can improve the electronic defense capability of radars fundamentally which is a research hotspot of current aviation equipment and the key of it is the design of RF stealth signal.Anti-sorting signal is an important RF stealth signal and the design method of anti-sorting signal is one of the difficult points in RF stealth signal design.By analyzing Sequential Difference Histogram(SDIF)sorting algorithm the main sorting algorithm of Radar Warning Receiver(RWR)and other real-time electronic reconnaissance equipment the failure principle of Pulse Repetition Interval(PRI)estimation error is pointed out when PRI signal changes rapidly in a large range.Then an anti-sorting signal design method for RF stealth radar based on pulse group agility is proposed.In other words through PRI stride agility of pulse group signal the main sorting algorithm output of RWR and other real-time broadband electronic reconnaissance equipment may produce large error or even complete error.Simulation and experiment prove that the signal designed based on the above method can effectively counter RWR main sorting algorithm and the objective of radar anti-sorting is achieved.

关 键 词：射频隐身 分选失效 序列差值直方图算法 重频滑变 大步进 加权平均PRI估计值 

分 类 号：TN974[电子电信—信号与信息处理]