基于反辐射导引头测角信息的近炸引信开机策略

摘要

为提高反辐射导弹近炸引信的抗干扰能力,提出了一种利用被动雷达导引头测角信息实现弹道封锁的方法.分析了末段弹道上导引头测角信息与弹目距离的统计关系；根据导弹能否直接命中目标雷达天线,确定了解除弹道封锁的判据；在假设导引头测角误差服从均匀分布的前提下,以近炸引信“不错过最晚开机位置”和“不过早开机”为原则,分别讨论了近炸引信开机时弹目距离概率分布函数的上下界.以典型的弹目参数进行了仿真计算,结果表明,该方法可以保证近炸引信在弹道末段适时开机,有效提高近炸引信在弹道上的抗干扰能力.%To improve the proximity fuze anti-jamming capacity of anti-radiation missile(ARM),a method was put forward,which chose the proximity fuze starting position with the use of angular information measured by passive radar seeker.On the terminal trajectory,the statistic relationship between angular measurement information from the seeker and the missile-target distance was analyzed.The criterion of starting the proximity fuze was set up by judging whether ARM could hit or miss the radar target antenna.Based on the assumption of seeker angular measurement error obeying uniformity distribution,and with the principles of "start before the latest position"and "start as late as possible",the upper and lower limits of missile-target distance PDF (Probability Distribution Function) were discussed respectively when the proximity fuze started to work.Aiming at the typical parameters of ARM and target,a simulation was carried out.The results show that the method can ensure the proximity fuze starting at proper position on the terminal trajectory,and the proximity fuze anti-jamming capability is improved effectively.