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New High Level Flag Message (3002) [OI-3101] #1487

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@armallen armallen commented Jul 18, 2025

Description

For safety/availibility reasons, we are implementing a new 3002 message, based off of 3001.

  • 3001 contains one correction time for all integrity corrections: corr_time
  • 3002 contains two correction times: iono_corr_time (for ionospheric corrections) and sat_corr_time (for satellite corrections).

This new message was tested at skylark level using an exp networks with external health-checkers connecting to the caster.

API compatibility

Both 3001 and 3002 are handled by libsbp. 3001 is tagged as deprecated, and replaced with 3002.

API compatibility plan

libsbp can encode/decode both messages.
auk/libdave will be able to encode/decode both messages. But in practice, 3001 will be decoded as a 3002 with sat_corr_time == iono_corr_time.

JIRA Reference

https://swift-nav.atlassian.net/browse/OI-3101

Related PRs

@armallen armallen changed the title High Level Flag Message 3002 High Level Flag Message 3002 [OI-3101] Jul 21, 2025
@armallen armallen changed the title High Level Flag Message 3002 [OI-3101] New High Level Flag Message (3002) [OI-3101] Jul 30, 2025
pcrumley pushed a commit that referenced this pull request Aug 7, 2025
# Description

While working on #1487 I noticed
several pipelines pipelines are failing/timing out (example:
https://github.com/swift-nav/libsbp/actions/runs/16514255607/job/46702019004).

These are relying on deprecated github actions runners (ubuntu-20.04),
which are not available anymore. This PR removes as much ubuntu-20.04
references as possible.

With this PR, all existing libsbp CI workflows are functional 🎉 

# API compatibility

No API change

# Related PRs
Implemented while working on
#1487
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@@ -41,8 +41,128 @@ definitions:
type: u8
desc: Chain and type of flag.

- MSG_SSR_FLAG_HIGH_LEVEL:
- MSG_SSR_FLAG_HIGH_LEVEL_DEP_A:
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This is the file where the message changes are done

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