基于龙格库塔法的预测闭路制导方法研究

交会飞行器是要求以一定速度与运动目标交会的飞行器.其运载器的制导任务就是将交会飞行器运送到空间某一特定区域并使之达到期望速度矢量.但是由于干扰力的存在,以及实际物理系统对目标导引量的时延性以及各种误差的影响将造成很大的脱靶量.为此,本文给出了预测闭路制导方法.根据运载器的实时飞行状态和目标的运行参数,通过龙格库塔法对命中点进行预测,在此基础上完成需要速度的确定.经数学仿真验证本文的方法具有很高的制导精度.保证了交会飞行器和所要攻击的目标在同一时刻到达同一位置.

The Prediction Closed Loop Guidance Based on the Runge-Kutta Equation

The rendezvous vehicle is to request to rendezvous the moving targets with the certain speed.The carrier is supposed to send the intersection vehicle to the located airspace and increased its velocity to the required value.However,the effect by the interference force,and the guidance delay caused by physical system and some other errors will bring in great miss distance.In order to solve this problem,this paper presents a prediction closed loop guidance algorithm,which could use the real-time aviation state of the carrier and the parameters of the targets to predict the guidance instructions by Runge-Kutta equation,and calculate the required velocity.Simulation results show that the method in this article can achieve high guidance precision and make sure that rendezvous vehicle and target can reach the same airspace at the same time.