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飞行器在再入段的弹道可用较为精确的动力学模型描述,在地心直角坐标系下建立飞行器再入段的动力学模型,利用UKF对弹道式再入目标的弹道进行估计,并与三站几何解析法的解算结果进行对比,仿真结果表明,基于动力学模型的UKF可以有效地提高再入目标弹道的估计精度。
The ballistic trajectory of the reentry vehicle can be described by a more accurate dynamic model. The dynamic model of the aircraft reentry vehicle is established in the Cartesian coordinate system. The ballistic trajectory of the ballistic reentry target is estimated by UKF. The results of geometric analysis are compared. The simulation results show that UKF based on dynamic model can effectively improve the accuracy of re-entry trajectory estimation.