摘要
为了提高移频干扰对脉冲多普勒(PD)雷达的干扰效果,根据目标特征调控原理,分析了移频拖引干扰应满足的条件,提出了一种基于无源目标特征调控的移频拖引干扰方法.该方法通过在目标表面涂覆或覆盖相位调制表面(PSS)材料的方式调控目标的散射特性,引起目标多普勒频率的视在漂移,使脉冲多普勒雷达产生测距误差.仿真结果表明,通过目标特征调控的方式实现的移频拖引干扰,在隐藏真实目标回波的同时,分别在真实目标前向和后向形成2个假目标,大大提高了干扰效果,验证了该方法的可靠性.
In order to improve the interference effect of frequency shift jamming on pulse Doppler(PD)radar,according to the principle of target characteristic modulation,this paper analyzes the conditions that the frequency shift pull-off jamming should meet,and proposes a frequency shift pull-off method based on passive target characteristic modulation.This method is used to modulate the scattering characteristics of the target by coating or covering the phase modulation surface(PSS)material on the target surface,resulting in the apparent drift of the target Doppler frequency and causing the pulse Doppler radar to produce ranging errors.The simulation results show that the frequency shift pull-off jamming realized by the method of target feature modulation hides the echo of the real target,and simultaneously forms two false targets both in front of and behind the real target,respectively,which greatly improves the interference effect.The paper also verifies the reliability of the method.
作者
张江
冯德军
ZHANG Jiang;FENG Dejun(School of Electronic Science,National University of Defense Technology,Changsha 410073,China;State Key Laboratory of Complex Electromagnetic Effects on Electronics Information System,National University of Defense Technology,Changsha 410073,China)
出处
《空军预警学院学报》
2021年第5期342-346,共5页
Journal of Air Force Early Warning Academy
关键词
脉冲多普勒雷达
线性调频信号
移频拖引
无源特征调控
pulse Doppler(PD)radar
LFM signal
frequency shift pull-off
passive feature modulation
