一种基于飞行任务的临近空间短距滑翔飞行器弹道预示方法

针对临近空间短距滑翔飞行器机动模式多变、弹道参数变化剧烈等特点,本文设计了一种基于变结构交互式多模型滤波的轨迹预测方法.该方法基于飞行任务结合自适应网格构建时变的机动模型集,解决机动模式多变的问题.通过引入渐消因子、修正Markov概率转移矩阵,提出一种变结构交互式多模型方法辨识机动模型特征参数.最后通过更新机动模型中...

A Trajectory Prediction Method for Near Space Shortrange Glide Vehicle Based on Flight Mission

Aiming at the characteristics of short range gliding vehicle in near space with variable maneuvering modes and dramatic changes in ballistic parameters, this paper designs a trajectory prediction method based on variable structure interactive multi model filtering. This method builds a time varying maneuvering model set based on flight missions combined with adaptive grids to solve the problem of maneuvering modes. A variable structure interactive multi model method is proposed to identify the characteristic parameters of the maneuvering model by introducing the fading factor and the modified Markov probability transfer matrix. On this basis, by updating the control parameters in the maneuvering model, the trajectory prediction under the condition of numerical integration is realized. The simulation results show that this method has high precision and strong robustness trajectory tracking capabilities for short gliding vehicle in typical maneuvering modes, as well as strong convergence in the trajectory predication process, so it has certain theoretical significance and engineering value.