制导火箭弹中末交接班雷达导引头截获概率分析

Analysis on Acquisition Probability of Terminal Guidance Hand-over Radar Seeker in Guided Rocket

截获概率是雷达导引头制导武器的关键指标,精确命中目标的前提是导引头能够截获目标,提升截获概率对于这类武器的毁伤概率十分重要。本文以毫米波雷达末制导火箭弹为研究对象,通过对火箭弹质心运动方程的推导得到理想状态下的弹道方程,并建立控制指令数学模型。基于弹道数学模型在中末交接班段提出一种优化方案,使导引头对目标截获概率提升,并通过蒙特卡洛法进行模拟打靶和仿真计算,将优化前后的截获概率进行对比,结果表明该优化方案可以有效的提高导引头截获概率,对提升火箭弹命中精度提供帮助。

Acquisition probability is key index of weapon guided with radar seeker.Precondition of hitting target accurately is that a seeker can acquire a target.Increasing acquisition probability is very important for kill probability of this type of weapon.Millimeter-wave radar guided rocket is used as a research object to obtain a trajectory equation in ideal state via deducing equation of rocket center of mass motion,and mathematical model of control command is established.An optimizing plan based on trajectory mathematical model in medium and terminal handover section to make acquisition probability of seeker increase.Simulation targeting and simulation calculation is performed by using Monte-Carlo method.The acquisition probability before and after optimizing is compared.The result shows that using this optimized plan can increase acquisition probability of seeker effectively,which is helpful for improving hitting accuracy of rocket.