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6 July 2015 Method and simulation for spacecraft clock correction based on x-ray pulsars signal
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Proceedings Volume 9631, Seventh International Conference on Digital Image Processing (ICDIP 2015); 96312A (2015) https://doi.org/10.1117/12.2197156
Event: Seventh International Conference on Digital Image Processing (ICDIP15), 2015, Los Angeles, United States
Abstract
X-ray pulsar-based spacecraft navigation comes to be a new kind of autonomous navigation technology with high potential, for the advantages of high reliability, good autonomy, high precision and wide applicability. Timing, determination of position and attitude are main prospects of using X-ray pulsars [1,2]. To realize the pulse signal timing, in this paper, a Phase-Locked Loop circuit for tracking pulsar signal frequency is designed; PLL is built in the Simulink environment and tested by using simple pulse signal to get circuit parameters with good track effect. The Crab Nebula pulse profile, which is used as the simulation signal source, is modelled by using the mathematical method [3]. The simulation results show that the PLL circuit designed in the paper can track the frequency of pulse signal precisely and can be used for spacecraft clock correction.
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Xianzhou Gui, Chen Sun, and Senlin Huang "Method and simulation for spacecraft clock correction based on x-ray pulsars signal", Proc. SPIE 9631, Seventh International Conference on Digital Image Processing (ICDIP 2015), 96312A (6 July 2015); https://doi.org/10.1117/12.2197156
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