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  

A Trajectory Prediction Method for Near Space Short-range Glide Vehicle Based on Flight Mission

作　　者：王开园 许志[1,2] 唐硕 万佳庆[1,2,3] WANG Kai-yuan;XU Zhi;TANG Shuo;WAN Jia-qing(School of Astronautics,Northwestern Polytechnical University,Xi’an 710072,China;Shaanxi Key laboratory of Aerospace Flight Vehicle Technology,Xi’an 710072,China;Jiangnan Mechanical and Electrical Design Institute,Guiyang 550009,China)

机构地区：[1]西北工业大学航天学院,西安710072 [2]陕西省空天飞行器设计重点实验室,西安710072 [3]江南机电设计研究所,贵阳550009

出　　处：《宇航学报》2021年第1期50-60,共11页Journal of Astronautics

摘　　要：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的控制参量,实现数值积分条件下的轨迹预测。仿真结果表明,该方法对典型机动模式下的短距滑翔飞行器,具有高精度和强鲁棒的轨迹跟踪能力并且在轨迹预示过程中具有较强的收敛性,因此具有一定的理论意义和工程应用价值。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.

关 键 词：短距滑翔飞行器 飞行任务剖面 自适应网格 交互式多模型 轨迹预测 

分 类 号：V249.1[航空宇航科学与技术—飞行器设计]