Recursive Estimation of Spacecraft Position and Velocity Using X-ray Pulsar Time of Arrival Measurements
Recursive Estimation of Spacecraft Position and Velocity Using X-ray Pulsar Time of Arrival Measurements
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DOI：
10.1002/j.2161-4296.2006.tb00380.x
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发表时间：
2006-09
影响因子：
--
通讯作者：
S. Sheikh;D. Pines
中科院分区：
文献类型：
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作者：
S. Sheikh;D. Pines
自从脉冲星被发现以来，人们就一直在考虑使用脉冲星来确定航天器的位置。这些天体来源提供独特的信号，可以被放置在航天器上的传感器探测到。经过充分的检测和处理，这些信号可用于生成相对于惯性参考位置的距离测量。多种测量可用于保持精确的导航解决方案，并增强自动驾驶车辆的操作。本文描述了在卡尔曼滤波器中混合脉冲星衍生距离测量，用于连续确定地球轨道航天器的位置和速度。给出了几个不同轨道高度的例子，利用脉冲x射线信号模型得到的递归均值来建立期望的性能。
The use of pulsars for spacecraft position determination has been considered since their discovery. These celestial sources provide unique signals that can be detected by sensors placed onboard spacecraft. Upon sufficient detection and processing, these signals can be used to generate range measurements with respect to an inertial ref- erence location. Multiple measurements can be used to maintain an accurate navigation solution and enhance autonomous vehicle operation. This paper provides a description of blending pulsar-derived range measurements within a Kalman filter for continuous determination of Earth-orbiting spacecraft position and velocity. Several examples at different orbital altitudes are presented to establish the expected performance using recursive meas- urements obtained from models of pulsed X-ray signals.