毫米波末制导弹药搜索段弹道设计

针对毫米波末制导弹药视场较小的问题,进行了搜索段弹道设计.建立了导引头搜索捕获域模型,推导出弹药无动力滑翔距离公式.针对毫米波末制导弹药搜索段弹道,分别进行平飞弹道方案和等弹道倾角斜下滑弹道方案设计.仿真表明:平飞弹道方案扫描域不收缩,但飞行速度下降较快,对于相同的滑翔距离和末速要求,其起始滑翔速度较大;斜下滑弹道方案增强了制导弹药的滑翔能力,但存在扫描域收缩的缺点,采用导引头光轴在俯仰方向随高度进动可解决该问题.2种弹道方案都可以满足扫描域和末速要求.

Trajectory Design of Scanning Search Phase for MMW Terminal Guided Munition

The scanning trajectory was designed for MMW terminal guided munition to enhance the ability of target capturing. The mathematical model of the searching acquisition area of seeker was established, and the gliding range formulation of munition without power was deduced. Two scanning trajectory projects-horizon flight and gliding flight with constant trajectory angle were designed. The simulation results indicate that searching acquisition area of the horizon flight project is not convergent during flight, but its velocity drops fast. For the same glide range and terminal velocity requirements, its initial velocity of gliding will be high. The gliding trajectory enhances the gliding ability of guided munition, but its searching acquisition area is convergent. By means that the angle of seeker axis alters with the flight height, the phenomenon of convergence can be avoided. The projects of two kinds can meet the requirements of searching acquisition area and terminal velocity.