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Sensors 2015, 15(9), 22325-22342;

Novel X-ray Communication Based XNAV Augmentation Method Using X-ray Detectors

1,* , 1,†
School of Aerospace Science and Technology, Xidian University, Xi'an 710126, China
Xi'an Microelectronics Technology Institute, Xi'an 710054, China
These authors contributed equally to this work.
Author to whom correspondence should be addressed.
Academic Editor: Vittorio M. N. Passaro
Received: 8 July 2015 / Revised: 25 August 2015 / Accepted: 31 August 2015 / Published: 3 September 2015
(This article belongs to the Section Physical Sensors)
Full-Text   |   PDF [898 KB, uploaded 3 September 2015]   |  


The further development of X-ray pulsar-based NAVigation (XNAV) is hindered by its lack of accuracy, so accuracy improvement has become a critical issue for XNAV. In this paper, an XNAV augmentation method which utilizes both pulsar observation and X-ray ranging observation for navigation filtering is proposed to deal with this issue. As a newly emerged concept, X-ray communication (XCOM) shows great potential in space exploration. X-ray ranging, derived from XCOM, could achieve high accuracy in range measurement, which could provide accurate information for XNAV. For the proposed method, the measurement models of pulsar observation and range measurement observation are established, and a Kalman filtering algorithm based on the observations and orbit dynamics is proposed to estimate the position and velocity of a spacecraft. A performance comparison of the proposed method with the traditional pulsar observation method is conducted by numerical experiments. Besides, the parameters that influence the performance of the proposed method, such as the pulsar observation time, the SNR of the ranging signal, etc., are analyzed and evaluated by numerical experiments. View Full-Text
Keywords: XNAV augmentation; X-ray communication; X-ray ranging; X-ray detector; measurement model XNAV augmentation; X-ray communication; X-ray ranging; X-ray detector; measurement model

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Song, S.; Xu, L.; Zhang, H.; Bai, Y. Novel X-ray Communication Based XNAV Augmentation Method Using X-ray Detectors. Sensors 2015, 15, 22325-22342.

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