临近空间高超声速再入滑翔目标跟踪模型

Target Tracking Model for Hypersonic Reentry-Glide Vehicle in Near Space

针对临近空间高超声速再入滑翔飞行器(HRGV)的跳跃滑翔跟踪问题,建立一种新型跟踪模型。首先对目标进行受力分析并结合HRGV横、纵向运动特性得到各方向气动加速度特性;在此基础上将气动加速度中的阻力和爬升力加速度建模为正弦自相关模型,转弯力加速度建模为一阶马尔科夫模型;然后采用一种分离滤波模型对目标状态和气动加速度分别进行估计,推导得出状态滤波模型和气动加速度滤波模型表达式。仿真实验结果表明,相比该类目标的其他跟踪算法,该算法的跟踪精度有一定提高,此模型优越性较强。

Reasonable modeling to aerodynamic acceleration is helpful to achieve accurate target tracking for hypersonic reentry-glide vehicle in near space.In view of this kind of target jump glide tracking problem,a new tracking model is established in this paper.Firstly,the aerodynamic acceleration characteristics in all directions are obtained by the force analysis of the target and combination of the lateral and longitudinal motion characteristics of HRGV.On this basis,the resistance and climb force acceleration in the aerodynamic acceleration are modeled as a sinusoidal autocorrelation model,and the turning force acceleration is modeled as a first-order Markov model.Then,the target state and aerodynamic acceleration are estimated respectively by a separate filtering model.The expressions of state filter model and aerodynamic acceleration filter model are derived.The simulation results show that the tracking accuracy of the proposed algorithm is better than that of other tracking algorithms for this kind of target,and the superiority of the model is verified.