Galileo OSNMA in force Reference Documents

Galileo OSNMA SDD v1.0 | July 2025

This document describes the characteristics and performance of the Galileo OSNMA. This version presents the Minimum Performance Levels (MPLs) targeted for the OSNMA Initial Service and defines the conditions under which such MPLs can be reached.

Service Notice #2026004- Updates on OSNMA NAGUs

Galileo OSNMA SIS ICD v1.1 | October 2023

This document together with the Galileo Open Service Signal-In-Space Interface Control Document contain all information on the OSNMA SIS relevant for the user segment.

Galileo OSNMA Receiver Guidelines v1.3 | January 2024

This document provides guidelines for the user segment implementation of the OSNMA functionality, as defined in the Galileo OSNMA SIS ICD and should be considered strictly as a complement to it.

Annex B - OSNMA Test Vectors

Galileo OSNMA IDD ICD v1.1 | January 2024

This document aims at complementing the OSNMA Receiver Guidelines and the OSNMA SIS ICD by providing the users with the information required to access and retrieve the cryptographic data (Public Key and Merkle Tree) available via the EGNSS Service Centre (GSC) interfaces.

PKI System CP/CPS v1.1 | January 2024

This document describes the general rules for providing certificate services such as registration, public key certification, key and certificates rekey and certificate revocation. The EUSPA OSNMA ICA-001 certificates are provided in the view of the OSNMA service provision phase.

OSNMA Info Note v1.0 | November 2021

This document provides an introduction on the benefits of authentication, OSNMA service characterization, target markets and associated roadmap.