As the pulsar signal is extremely weak and discontinuous, the spacecraft needs to observe the target pulsar for a long duration to accumulate photons enough to extract the pulse TOA [1]. During the observation period of pulsar, the position of spacecraft has to be predicted by propagating the orbital dynamics model, resulting in the position error presents a nonlinear growth. Additionally, the low-thrust deep space explorers cannot autonomously position by only fusing the information of dynamics and pulsar measurement.
X-Ray Pulsar/Multiple Measurement Information Fused Navigation
Navigation: Science and Technology
2020-04-18
24 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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