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Performance Evaluation of CentiSpace Navigation Augmentation Experiment Satellites.

Lin Chen1, Feiren Lv1, Qiangwen Yang2

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Summary
This summary is machine-generated.

CentiSpace, a low Earth orbit navigation system, successfully verified co-time and co-frequency self-interference suppression. This enables centimeter-level orbit determination and reliable augmentation signals for Global Navigation Satellite System receivers.

Keywords:
GNSS receiverLEO navigation augmentationself-interference suppressionsignal quality

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Area of Science:

  • Satellite Navigation Systems
  • Spacecraft Engineering
  • Signal Processing

Background:

  • Low Earth Orbit (LEO) navigation augmentation systems face self-interference challenges.
  • Existing systems struggle with simultaneous reception and broadcasting of signals.
  • CentiSpace introduces a novel approach to mitigate these issues.

Purpose of the Study:

  • To analyze the performance of the CentiSpace LEO navigation system.
  • To evaluate the effectiveness of the co-time and co-frequency (CCST) self-interference suppression technique.
  • To assess the quality of Global Navigation Satellite System (GNSS) signals and augmentation data.

Main Methods:

  • In-orbit verification of the CCST self-interference suppression technique on CentiSpace satellites.
  • Performance analysis using on-board experimental data.
  • Evaluation of space-borne GNSS receiver performance and augmentation signal quality.

Main Results:

  • CentiSpace successfully demonstrated CCST self-interference suppression in orbit.
  • Space-borne GNSS receivers achieved over 90% satellite visibility.
  • Centimeter-level precision in self-orbit determination was attained.
  • Augmentation signal quality met BeiDou Navigation Satellite System (BDS) interface requirements.

Conclusions:

  • CentiSpace's CCST technique enables robust GNSS signal augmentation in LEO.
  • The system shows significant potential for global integrity monitoring and enhanced navigation.
  • This research provides a foundation for future LEO augmentation system development.