基于X射线脉冲星的深空探测器自主导航方案

X射线脉冲星自主导航系统可以为深空探测器提供位置、速度、时间和姿态等丰富且自主的导航信息,以X射线脉冲星测得的信息作为量测量,结合轨道动力学方程,对航天器的轨道进行自主估计确定。论文阐述了该方案的导航原理,在借鉴现有航天器导航系统的基础上,提出了基于X射线脉冲星导航的方案,介绍了方案的硬件组成、系统结构,并针对方案中导航敏感器多冗余的特征,给出了基于多传感器组合导航技术的结构,最后用仿真资料对方案做了性能概算和精度估计。

X-ray Pulsars Based Autonomous Navigation Scheme for the Deep Space Explorer

An X-ray pulsars based autonomous navigation system can provide sufficient navigation information,such as position,velocity,time and attitude.Using the measurements detected from the X-ray pulsars,and incorporating the measurements with the spacecraft dynamics, an approach is developed to determine the estimated solutions of the spacecraft orbit.The principle of this approach was presented.Based on the existing spacecraft navigation system,an X-ray pul- sar-based navigation scheme was provided.The hardware component,the system structure,and the integrated navigation architecture based on multi sensors were described.Finally,according to the simulation data,the precision of this scheme was estimated.