利用截断信号测向实现反辐射导弹抗有源诱偏

Realization of contradicting active decoy for anti-radiation missile based on DOA estimation with amputated signal

针对两点源诱偏反辐射导弹的问题,提出了一种基于载断信号的抗诱偏方法.首先对导引头接收的混合脉冲信号进行载断处理,从而将两点源信号的到达时间差转化为信号能量差;然后利用改进的双波束测向技术,根据两通道输出能量之差估计导弹的偏转角.文中推导了高斯白噪声环境下导弹偏转角度的概率分布表达式,分析了反辐射导弹抗诱偏的过程,最后通过计算机仿真验证了所提方法的可行性和有效性.

Aiming at the problem that dual sources decoy anti-radiation missile（ARM）,a countermeasure is proposed based on the amputated signal.Firstly,the mixed pulse signal received by the seeker was amputated,so that the difference between the times-of-arrival of the dual sources＇ signals was transformed into energy difference between the signals.Then,the deflexion angle of the ARM was estimated with a modified double-beam direction-finding technique based on the energy difference between the two channels＇ outputs.The distribution expression of the estimated deflexion angle in Gaussian white noise environment was derived and the process of the ARM counteracting dual sources decoy was analyzed.At last,the computational simulation verifies the feasibility and the validity of the proposed method.