基于目标变轨运动的扩展比例导引律仿真研究

Simulation Research on Extended Proportional Guidance Law Based on Orbital Transfer Motion of Target

在传统动力学微分方程的基础上提出一种扩展的比例导引规律,对于目标感知危险距离之后的正弦变轨运动,通过仿真运用扩展比例导引法分析对法向过载和弹道曲率的影响。仿真结果表明,与传统的比例导引比较,在合适的随机量下扩展比例导引法拦截目标时,导弹在接近目标时的法向过载的波动有所改善,拦截时间和法向过载均有较好的性能,对于大机动目标的追踪性能优于经典的比例导引规律。

Based on the traditional dynamic differential equation, an extended proportional guidance law is presented. For the sinusoidal or-bital transfer motion of target after perception of danger distance, the effect of normal overload and trajectory curvature is analyzed using the extended proportional guidance law by simulation. Compared with traditional PNG laws, simulation results show that the intercept of the target based on extended proportional guidance law under the proper random quantity, when the missile is in close proximity to the target the normal overload fluctuation is improved somewhat. And interception time and normal overload have good performance. Tracking per-formance for high maneuverability target is better than the classical proportional guidance law.