The documents included in this section are currently in effect and supersede all previous versions.
Prior versions of Galileo OS Documents are available for historical reference purposes on the following page: Galileo OS Archived Programme Reference documents.
 | Galileo OS SDD v1.3 | November 2023This document describes the characteristics and performance of the Galileo Open Service provided throughout the Galileo OS SIS.
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 | Galileo OS SIS ICD v2.2 | November 2025This document specifies the interface between the Galileo Space Segment and the Galileo User segment. Complementary Informative Note 1, August 2018
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 | I/NAV Info Note v1.0 | March 2023This document summarises the new features introduced in the Galileo OS SIS ICD to improve the robustness, and the time required for Galileo navigation data demodulation.
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 | Ionospheric correction algorithm for SF users v1.0 | September 2016This document complements the Galileo OS SIS ICD by describing the reference algorithm to be implemented at user receivers to compute ionospheric corrections based on the broadcast coefficients in the navigation message for Galileo single-frequency users. Errata sheet, February 2020
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 | Alternate Iono Correction Algorithm for SF Users v1.0 | May 2022This document describes in detail an algorithm to compute ionospheric corrections based on the broadcast coefficients in the navigation message for Galileo single frequency users, called NTCM G (Neustrelitz Total Electron Content Model).
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 | Galileo Reference Antenna Pattern v1.0 | May 2024This document provides the model of the Galileo Reference Antenna Pattern developed by the Joint Research Centre (JRC) of the European Commission. Annex - Galileo Reference Antenna Pattern metadata
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 | Galileo PRN Spreading Code Assignment Process v1.0 | November 2023This document describes the process applicable to systems other than Galileo planning to transmit Galileo-like signals to request PRN codes for one or more of the following signal components: 1) E1-B and E1-C, 2) E6-B and E6-C, 3) E5a-I, E5a-Q, E5b-I and E5b-Q
Galileo PRN Spreading Code - Application Form |
 | Galileo G2 Evolution of QP signals and Interface Control Information v1.0 | December 2025This document provides early information on the planned G2G Quasi-Pilot signals to enable receiver manufacturers to prepare their receivers, ensuring a smooth transition during their introduction and evolution.
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