临近空间高超声速目标跟踪动力学模型

Near Space Hypersonic Target Dynamics Tracking Model

针对临近空间滑跃式高超声速目标(NSHV)跟踪问题,提出一种新型的动力学跟踪模型。首先从动力学方程与横纵向机动样式两个方面分析了NSHV运动特性,将其抽象为滑跃式NSHV气动加速度相关性的一般规律;在此基础上将气动加速度中的阻力与爬升加速度建模为二阶时间相关模型,使其加速度自相关函数同时具备周期性与衰减性,并据此建立了动力学跟踪模型状态方程;此外,为应对有无动力段转换的误差突变问题(有动力的情况),引入强跟踪滤波进行突变点的滤波补偿。最后通过与不同现有算法比较验证了模型的优越性。

Aiming at the problem of tracking near space hypersonic vehicles(NSHV), a new dynamic tracking model is proposed. Firstly, the motion characteristics of NSHV are analyzed from the dynamic equations as well as the transverse and longitudinal maneuvering modes, which are abstracted as the general law of the aerodynamic acceleration relativity of a slip NSHV. On this basis, the resistance and climb force acceleration in the aerodynamic acceleration are modeled as the second-order time-dependent model, it is considered that the two acceleration correlations have both periodicity and decay, and then the state equation of the dynamic tracking model is established. In addition, in order to deal with the problem of the error abrupt change of the power with or without power conversion, a strong tracking filter is introduced to filter the abrupt point. Finally, compared with different existing algorithms, the superiority of the proposed model is verified.