基于样条滤波的航天器相对运动检测方法

Relative Motion Detection Method of Spacecraft Based on Spline-Filter

近距离相对运动检测在交会对接、航天器随动抓捕等领域有着重要的作用。基于三状态样条滤波算法,对接近航天器的运动状态进行实时预报并对其机动进行检测。首先构建两航天器的相对动力学模型并将其应用于三状态样条滤波算法中,通过检测滤波新息来对目标机动发生或消除进行判断,最后利用一个双脉冲交会的实例进行了仿真分析。仿真结果表明,该方法具有较高的精度和检测效率。

The relative motion detection plays an important role in close rendezvous and docking, spacecraft follow-arresting and other fields. Based on three-state spline filter, the real-time forecasting of the chaser motion and detecting its maneuver is proposed. Firstly, a relative dynamic model of two space- crafts is built and is applied to three-state spline filter algorithm, then the occurrence or elimination of chaser maneuver is judged by filter innovation. Finally, an example of double pulse rendezvous is presen- ted and the filtering results are compared with the real measured values. The results show that this meth- od has higher accuracy and detection efficiency.