基于摄动理论的落点预测算法研究与仿真分析

Research and Simulation Analysis of Impact Point Prediction Algorithm Based on Perturbation Theory

针对一维弹道修正弹的预测落点精度问题改进摄动落点预测模型,根据相对理论弹道上、下扰动的弹道构建摄动偏导数计算落点预测误差,并对落点预测误差进行均值处理;通过离线阻力机构工作射程与修正距离映射关系,确定最优修正时间;应用蒙特卡洛弹道仿真系统验证在多种误差干扰条件下弹道修正效果,计算弹道落点的统计参数,并对落点统计参数进行评测,以验证改进摄动模型的有效性。

In order to solve the problem of impact point prediction accuracy of one-dimensional modified projectile's external trajectory correction,the perturbation impact point prediction model is improved,and the impact point prediction error is calculated according to the upper and lower perturbation trajectories of relative theoretical trajectory,and the impact point prediction error is averaged.Determine that optimal correction time through the mapping relation between the work range and the correction distance of the off-line resistance mechanism;the Monte Carlo trajectory simulation system is used to verify the trajectory correction effect under various error interference conditions,calculate the statistical parameters of trajectory impact point and evaluate the statistical parameters of impact point,and verify the effectiveness of the improved perturbation model.