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Enhanced GNSS Reliability on High-Dynamic Platforms: A Comparative Study of Multi-Frequency, Multi-Constellation

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Summary
This summary is machine-generated.

Multi-constellation and multi-frequency Global Navigation Satellite System (GNSS) signals enhance navigation system resilience against jamming. Combining GPS, Galileo, and GLONASS ensures continuous, accurate positioning for high-dynamic platforms during jamming events.

Keywords:
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Area of Science:

  • Navigation and Positioning Systems
  • Satellite Communications
  • Signal Processing

Background:

  • Global Navigation Satellite System (GNSS) signals are susceptible to jamming, degrading positioning, navigation, and timing (PNT) services.
  • Multi-frequency and multi-constellation GNSS offer potential improvements in immunity to signal disruption.
  • Existing research necessitates further investigation into GNSS signal resilience under diverse jamming conditions, particularly for high-dynamic platforms.

Purpose of the Study:

  • To experimentally evaluate the benefits of using multi-frequency, multi-constellation GNSS signals for enhanced receiver performance during jamming.
  • To assess the impact of simulated and real jamming signals on various combinations of GPS, Galileo, and GLONASS frequencies and constellations.
  • To determine the effectiveness of different GNSS configurations for high-dynamic platforms like aircraft and drones.

Main Methods:

  • Utilized Spirent and Orolia GNSS signal simulators to generate RF signals for two distinct airplane trajectory routes.
  • Investigated all possible combinations of GPS, Galileo, and GLONASS signal frequencies and constellations.
  • Experimentally evaluated receiver performance under both simulated and real jamming signal conditions.

Main Results:

  • Single-constellation, multi-frequency GPS solutions demonstrated limited reliable positioning under low jamming scenarios.
  • The integrated use of GPS, Galileo, and GLONASS signals significantly improved positioning continuity and accuracy.
  • Combined multi-constellation and multi-frequency GNSS approaches proved effective in mitigating jamming effects across low and high jamming intensities.

Conclusions:

  • Employing multi-frequency signals from multiple GNSS constellations (GPS, Galileo, GLONASS) is crucial for robust navigation in the presence of jamming.
  • Combined GNSS solutions provide superior resilience and continuous positioning accuracy for high-dynamic platforms compared to single-constellation systems.
  • This study validates the enhanced performance of integrated GNSS receivers for critical navigation applications facing signal disruption.