Method & Sources

Source register

Every source used, the exact statement it supports, and whether that statement has been verified against the KPI definition. 24 sources · 33 source–value links.

Verification overview

Verified primary source 16 Verified secondary source 1 Partially verified 11 Conflicting evidence 3 Source verification pending 2 No reliable source identified 0

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Sources (2)

T1 · EU institution / agency · Tier 1 · Official primary
Galileo Open Service Navigation Message Authentication adds another layer of protection against GNSS interference
EU Agency for the Space Programme (EUSPA)
Official EU agency explanation of OSNMA scope: improves spoofing detection, does not prevent spoofing or protect against jamming.
Published:
22 Jul 2025
Accessed:
9 Nov 2026
- KPI 09 · New critical-infrastructure navigation equipment supporting authenticated GNSS
  contextual
  "While the OSNMA does increase the ability to detect spoofing events, it does not prevent their occurrence. Nor does it protect against jamming."
  Period: 2025 · Scope: Galileo (global)
  Limitations: Context only.
  Reliability: Tier 1 (EUSPA).
  Statement located in retrieved text. Supports context only; no KPI value.
  ✓ Verified primary source
  Checked 9 Nov 2026
T1 · EU institution / agency · Tier 1 · Official primary
Galileo to be the first GNSS to offer authentication service worldwide with launch of OSNMA
EU Agency for the Space Programme (EUSPA)
Official EU agency announcement of OSNMA service launch on 24 July 2025. Pre-launch announcement, not the formal service declaration instrument.
Published:
22 Jul 2025
Accessed:
9 Nov 2026
- KPI 09 · New critical-infrastructure navigation equipment supporting authenticated GNSS
  contextual
  "Forthcoming official launch…on 24 July"; "While OSNMA does not prevent spoofing or jamming, it makes spoofing significantly harder by authenticating the data".
  Period: Service launch 24 July 2025 · Scope: Galileo (global)
  Limitations: Context for the KPI; does not measure equipment uptake.
  Reliability: Tier 1 (EUSPA).
  Statement located in retrieved text. Supports context only; no KPI value.
  ✓ Verified primary source
  Checked 9 Nov 2026