制导滑翔炸弹虚拟比例末制导律研究

Terminal Virtual Proportional Navigation Law for Guided Glide Bomb

对于不同的地面目标,以不同的着角命中目标,可大幅提高制导滑翔炸弹的毁伤效能,虚拟比例末制导律是实现这一目的的有效途径。其实现方法是:按照距离和角度约束公式,计算出虚拟目标的坐标,采用比例制导律引导制导滑翔炸弹飞向虚拟目标。距离约束保证了制导滑翔炸弹、虚拟目标和目标在命中时刻重合,角度约束保证了前两者以给定着角接近目标,最终保证脱靶量和着角满足要求。通过数字仿真,最大着角超过80°,着角误差小于5°。此方法只需要制导滑翔炸弹的坐标、速度以及目标坐标信息就可实现,所需信息量小,且形式简单、计算量小、工程上易于实现。

The terminal virtual proportional navigation law can improve the damage effect of guided glide bombs greatly by attacking the target at different impact angles for different ground targets. The method may calculate the coordinates of the virtual target according to the distance and angle limits, and guide the glide bomb to fly to the target by using proportional navigation law. The distance limit guarantees that the glide bomb, the virtual target and the target coincidence in the impact time, and the angle limit guarantees that the glide bomb approaches the virtual target in the set impact angle, which ensure the satisfied miss distance and impact angle. According to the simulation result, the maximum impact angle is larger than 80°, and the error is less than 5°. This method only needs the coordinates of the bomb and target and the bomb＇s speed, which is easy to realize in engineering and has less computation cost.