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First Galileo SAS Authenticated Time Solution

arXiv cs.CRby Aleix Galan-Figueras ()1 min read2 · 1 read
Read at arxiv.org
AI summary · glm-5.3Summaries by Vani AI

Researchers demonstrate the first timing solution computed from Galileo's new Signal Authentication Service, protecting receivers against GNSS spoofing.

Galileo's new Signal Authentication Service (SAS) on the E6-C signal directly authenticates ranging measurements, closing a gap left by OSNMA, which only protects navigation data. Researchers built a snapshot software receiver implementing a simplified SAS protocol and computed an authenticated receiver clock bias from recordings of both SAS-capable satellites, collected with a Septentrio SDR prototype. The results demonstrate feasible authenticated timing ahead of full SAS operational deployment.

Key facts
  • Galileo SAS authenticates ranging codes, unlike OSNMA which protects only navigation data
  • Only two SAS satellites currently transmit; full authenticated position not yet possible
  • First authenticated timing solution computed from a civil GNSS signal
  • Validated with recordings at multiple locations using a Septentrio prototype receiver
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Tags
authenticationgalileognssosnmasasspoofingtiming

From the original article

1 min read at arxiv.org

Spoofing attacks against civilian GNSS receivers have grown more common, especially near conflict zones where they now disrupt civil aviation, maritime operations, and critical infrastructure on a daily basis.

arXiv cs.CR

By Aleix Galan-Figueras · arxiv.org

Read the full article at arXiv cs.CR

A short excerpt; the article and its images belong to the publisher. Summary, key facts and assessment above are AI-written from the article and can be wrong.