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Experimental Assessment of OSNMA-Enabled GNSS Positioning in Interference-Affected RF Environments.

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  • 1Telecommunications Department, Politehnica National University of Science and Technology, 060042 Bucharest, Romania.

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The Galileo Open Service Navigation Message Authentication (OSNMA) system shows strong resilience against radio frequency interference (RFI) and spoofing attacks. Testing in real-world, RF-degraded conditions confirmed its robust performance for authenticated navigation.

Keywords:
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Area of Science:

  • * Navigation Systems Engineering
  • * Satellite Navigation Security
  • * Radio Frequency Interference Analysis

Background:

  • * Increasing threats of Radio Frequency Interference (RFI), jamming, and spoofing impacting Global Navigation Satellite Systems (GNSS).
  • * Documented prevalence of RFI and spoofing incidents in Eastern Europe necessitates performance evaluation of authentication systems.
  • * Need for end-user perspective assessment of GNSS authentication in challenging RF environments.

Purpose of the Study:

  • * To evaluate the real-world performance of the Galileo Open Service Navigation Message Authentication (OSNMA) system.
  • * To assess the robustness of OSNMA against RFI, jamming, and spoofing in degraded RF environments.
  • * To determine key performance indicators for end-users relying solely on authenticated Galileo signals.

Main Methods:

  • * Conducted a data-collection campaign across urban, suburban, and rural settings in Romania.
  • * Utilized a commercial GNSS receiver capable of OSNMA authentication.
  • * Analyzed signal capture data, focusing on instances of RFI and their impact on Position, Velocity, and Time (PVT) solutions.

Main Results:

  • * Galileo OSNMA demonstrated significant robustness against both accidental and intentional interference.
  • * Authentication performance was assessed under conditions with a high incidence of RFI.
  • * Identified specific scenarios where RFI impaired or prevented authenticated PVT solutions.

Conclusions:

  • * Galileo OSNMA provides a reliable authentication service even in challenging, RF-degraded real-world environments.
  • * The system exhibits resilience against various forms of intentional and unintentional RF interference.
  • * OSNMA is a valuable tool for enhancing the security and trustworthiness of navigation solutions.