一种打击地面固定目标的自适应比例导引律

Adaptive Proportional Guidance Law for Ground Stationary Target

针对某些制导导弹垂直打击地面固定目标的任务要求,研究了具有末端落角约束且无需测距信息的自适应比例导引律。通过分析导弹在导引段的纵向平面运动方程和侧向平面运动方程的特点,设计了实现垂直打击任务的制导逻辑。同时为了增强导引律的鲁棒性,提出了一种导引系数自适应更新的方案。仿真结果表明,与最优导引律相比,自适应比例导引律的制导精度受初始速度倾角、制导指令时延、制导指令更新频率等因素的影响较小,但受测量信号干扰的影响较大。

According to the problem that perpendicular impact on the grotmd stationary target was required for some guided missiles, the adaptive proportional guidance law with terminal angular constraint was derived, which didn＇t need range information. On analyzing the longitudinal plane motion equation and lateral plane motion equation in guided phase, the guidance logic for perpendicular impact task was devised. And for the sake of robustness enhancement of the guidance law, an adaptive guidance parameter updating method was proposed. Simulation results show that compared with optimal guidance law, the guidance precision of adaptive proportional guidance law is less affected by initial velocity inclination angle and guidance order delay and order updating frequency, but is more affected by signal measurement with jam.