Current OSNMA ICD - OSNMAlib v3.1.0

General information - OSNMAlib v3.1.0

This version is compatible with the following document versions:
Galileo_OSNMA_SIS_ICD_v1.1.pdf
Galileo_OSNMA_Receiver_Guidelines_v1.3.pdf

In other words, OSNMAlib is compatible with OSNMA live signal transmitted after 2023-08-03 11:00.

OSNMAlib complies with all the official test vectors. However, the internet download for the new Merkle tree is missing, so a file needs to be specified using the new_merkle_name option in the configuration dictionary (defaults to new_OSNMA_MerkleTree.xml).

See this wiki page for a list of all the OSNMAlib configuration options.

Check the website OSNMAlib.eu for a live view of the OSNMA protocol. The website also provides in an API the navigation data bits received and the OSNMAlib JSON output.

What has changed Major Version

• Status logging in pure JSON format. See json-schema [html|json].
• Multiple OSNMA optimizations. See (Improving Galileo OSNMA Time To First Authenticated Fix).
• Dual-frequency data reception from E1-B and E5b-I. Currently only for SBF.

What has changed Minor Version

• Reed-Solomon recovery for words 1-4 using words 17-20 transmitted in E1B.
• Reformated metrics folder to include new TTFAF simulations using dual-frequency and Reed Solomon.
• Custom run run.py file contains a dictionary pre-configured with several options for easy handling.

Full Changelog of this version: v2.5.4...v3.1.0

Current OSNMA ICD - OSNMAlib v2.5.4

General information - OSNMAlib v2.5.4

This version is compatible with the following document versions:
Galileo_OSNMA_SIS_ICD_v1.1.pdf
Galileo_OSNMA_Receiver_Guidelines_v1.3.pdf

In other words, OSNMAlib is compatible with OSNMA live signal transmitted after 2023-08-03 11:00.

With this release, OSNMAlib complies with all the official test vectors. However, the internet download for the new Merkle tree is missing, so a file needs to be specified with the new_merkle_name option (defaults to new_OSNMA_MerkleTree.xml).

Note: The new Subframe Status logging method is still under construction, expect updates in the future. Proposals on what to include in it are welcome.
Note: Chekout the website OSNMAlib.eu that implements this new status logging

What has Changed Minor Version

• Rework of the OSNMA state management.
• All the OSNMA events are correctly implemented.
• Optional TTFAF improvement by using the COP field (preprint).

What has Changed Patch Versions (accumulative)

• Added a real case of EOC and CREV. (OSNMA LIVE TEST NOTIFICATION (OLTN) 2024009)
• Fix NMA Status authentication on Tag verification. Now it propagates correctly.
• Fix status reporting when no KROOT or PKR is in force (PKREV, CREV, OAM)
• Fix a bug when data with the same IOD was received after a long out-of-sight period
• Fix a bug in the TESLA Key index calculation after one week
• Fix a bug where DSM blocks were not reset.
• Fix a bug with ADKD4 not implementing COP correctly
• Fix a bug with WT5 when it was the first word received after an outage and the nav data had changed.

Full Changelog of this version: v2.5.3...v2.5.4

Old OSNMA ICD

This version is compatible with the following document versions:
-Galileo_OSNMA_User_ICD_for_Test_Phase_v1.0.pdf
-Galileo_OSNMA_Receiver_Guidelines_for_the_Test_Phase_v1.1.pdf

In other words, is compatible with OSNMA live signal transmitted before 2023-08-03 11:00.