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

Shibin Song1, Luping Xu2, Hua Zhang3

  • 1School of Aerospace Science and Technology, Xidian University, Xi'an 710126, China. songshibin@stu.xidian.edu.cn.

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Summary
This summary is machine-generated.

This study introduces an enhanced X-ray pulsar-based navigation (XNAV) method using X-ray ranging for improved accuracy. Numerical experiments demonstrate its effectiveness over traditional XNAV techniques.

Keywords:
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Area of Science:

  • Astrophysics
  • Space Navigation
  • Signal Processing

Background:

  • X-ray pulsar-based navigation (XNAV) accuracy is limited, hindering further development.
  • X-ray communication (XCOM) offers potential for high-accuracy range measurements.
  • Accurate range measurement is crucial for enhancing XNAV performance.

Purpose of the Study:

  • To propose and evaluate an augmented XNAV method combining pulsar and X-ray ranging observations.
  • To improve the accuracy of spacecraft navigation systems.
  • To analyze the impact of key parameters on the proposed XNAV method's performance.

Main Methods:

  • Developed measurement models for both pulsar and X-ray ranging observations.
  • Implemented a Kalman filtering algorithm integrating observations and orbit dynamics.
  • Conducted numerical experiments to compare the proposed method with traditional XNAV.

Main Results:

  • The proposed XNAV augmentation method shows improved accuracy compared to traditional pulsar observation methods.
  • Performance is influenced by factors like pulsar observation time and ranging signal SNR.
  • The method effectively estimates spacecraft position and velocity.

Conclusions:

  • The integration of X-ray ranging significantly enhances XNAV accuracy.
  • The proposed method provides a viable solution for improving deep space navigation.
  • Further analysis of influencing parameters can optimize XNAV system performance.