基于单台光测设备的不规则目标再入弹道估算方法

Reentry Trajectory Estimation for Irregular Target Based on Single Optics Measurement

针对单台光测设备条件下不规则外形弹道目标的再入弹道估算问题,提出了以不规则外形再入弹道目标初始再入射面为基本约束条件,将光测设备视线矢量与初始再入射面的交点作为目标位置序列,得到与光测数据序列相应的目标位置序列,利用中点平滑方法得到弹道估值序列。在综合考虑目标初始再入射面偏差和光学测量数据误差的基础上,给出再入弹道误差估算方法。研究结果表明:该方法可以有效估计出再入目标的弹道参数,解决了单台光测设备测量数据不足,难以给出目标位置估值的问题。

For the irregularly shaped ballistic reentry target,based on a single optics measurement,the initial reentry surface of the ballistic target is proposed as the basic constraint.The intersection of the optical sight vector and the initial reentry surface is utilized as the target position sequence,and the target position sequence corresponding to the optical measurement data sequence is obtained.Then the ballistic estimation sequence is obtained by the midpoint smoothing method.Based on the comprehensive consideration of the initial reentry surface deviation and the optical measurement data error,the estimation method of the reentry ballistic error is given.According to the simulation experiment,the results show that the method solves the problem that the measurement data from a single optics measurement is not enough to constrain the target position.And it can effectively estimate the ballistic parameters and the landing point deviation.