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航天器完成预定任务后需要再入大气层,在再入大气层后需要对其进行定位跟踪。本文将UKF滤波算法应用到对航天器的跟踪中,首先建立再入航天器的动力学模型,并利用单个雷达观测站基于测角测距的原理,对再入航天器进行无源定位跟踪的仿真分析。仿真结果显示,此算法有较好的定位跟踪能力,具有较强的工程需求,实用性很强。
The spacecraft needs to re-enter the atmosphere after it completes the scheduled task and needs to locate and track it after re-entering the atmosphere. In this paper, the UKF filtering algorithm is applied to tracking the spacecraft. First, the dynamics model of the reentry spacecraft is established. Based on the principle of measuring angle by a single radar observer, passive tracking of the reentry spacecraft Simulation analysis. The simulation results show that this algorithm has better positioning and tracking ability, strong engineering requirement and strong practicability.