摘要
作为一种针对脉冲压缩接收机的灵巧干扰信号,卷积调制干扰能够对线性调频引信造成有效的欺骗干扰效果。为了使引信正常工作,有效抑制卷积干扰,首先通过推导卷积调制干扰的数学模型,分析了卷积干扰的干扰机理;然后从数学理论上推导了卷积干扰信号与引信回波信号存在正交的关系特点,提出通过正交投影技术对卷积干扰的抑制方法,在保持有效回波信号的情况下,对脉内多假目标欺骗干扰产生有效的抑制作用;最后以线性调频脉冲压缩信号为例进行仿真分析,验证了正交投影技术对卷积调制干扰的有效抗干扰效果。研究表明正交投影技术能够有效抑制卷积干扰对线性调频引信的干扰。
As the smart jamming signal toward pulse compression receiver,convolution modulation jamming signal can effectively jam linear frequency modulated（LFM） fuze in pulse deceiving.Firstly,to make the LFM fuze suppress convolution jamming effectively,mathematical model of convolution jamming and the convolution jamming mechanism is analyzed.Then orthogonality relations between the jam signal and the fuze echo signal is established by mathematical theory.The orthogonal projection,which can suppress the convolution jamming,is established.Finally,taking the LFM signal as example,orthogonal projection can effectively suppress the deceiving jamming signal based on convolution modulation,which is analyzed by simulation.The study shows that orthogonal projection achieves the effect of suppressing the multi-false-target in pulse deceiving.
出处
《电讯技术》
北大核心
2013年第8期1028-1032,共5页
Telecommunication Engineering
关键词
雷达引信
线性调频
卷积调制
正交投影
脉冲压缩
radar fuze
LFM
convolution modulation
orthogonal projection
pulse compression
