分时段实时观测脉冲星的单探测器导航方法

发布时间：2018-05-04 23:22

  本文选题：脉冲星 + 自主导航　； 参考：《北京航空航天大学学报》2014年09期

【摘要】：传统的X射线脉冲星导航系统需要同时观测3~4颗脉冲星,有效载荷的质量和功耗极大.针对航天器环地飞行中受地球遮挡、探测器可探测范围等因素影响,导致脉冲星并非所有时刻均可见的现象,提出了单探测器分时段实时观测脉冲星的导航方法.根据航天器的实际飞行情况,系统分析探测器在不同探测范围下对脉冲星实时的可见性状况,从每时段的可见星中选取单星进行导航.仿真表明,该方法可大大提高单探测器的导航性能,导航位置误差达到337m,同时有效地减小了导航系统的重量,为X射线脉冲星导航的工程实现提供了参考依据.
[Abstract]:The traditional X-ray pulsar navigation system needs to observe three or four pulsars at the same time. The mass and power consumption of the payload is very high. In view of the phenomenon that the pulsar is not visible at all times due to the influence of earth occlusion and detector detectable range in the orbit of spacecraft, a method for real-time observation of pulsar by single detector in real time is presented in this paper. According to the actual flight conditions of the spacecraft, the real-time visibility of the pulsar under different detection ranges is analyzed systematically, and the single star is selected from the visible star in each period for navigation. The simulation results show that this method can greatly improve the navigation performance of single detector, and the navigation position error is 337m. at the same time, the weight of the navigation system is reduced effectively, which provides a reference for the engineering implementation of X-ray pulsar navigation.
【作者单位】： 北京航空航天大学宇航学院;北京航天自动控制研究所;
【基金】：国家自然科学基金资助项目(51275027)
【分类号】：P145.6;V448.2
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本文编号：1845141