nmea0183-knowledge-patch

What problem does it solve?

Parsers and validators built from pre-cutoff model knowledge often assume fixed field counts and limited value tables; this leads to incorrect handling of multi-constellation GNSS data, RTK quality values, FAA mode indicators, and new v4.30 sentences. This Skill supplies authoritative, versioned field definitions and parsing implications so implementers can avoid subtle bugs and misinterpreted fixes.

Core Features & Use Cases

• Complete field tables: Full GGA quality range (0–8) including RTK float/fixed semantics and RTK progression guidance for precision applications.
• FAA mode & RMC Nav Status: FAA mode indicator history and GGA-to-FAA mapping plus RMC Nav Status placement and version implications.
• Multi-GNSS parsing guidance: Satellite ID ranges, GLONASS and BeiDou dual-numbering rules, GSA System ID and GSV Signal ID parsing with per-signal grouping notes.
• Compatibility notes: Field count and checksum shifts across NMEA 2.3, 4.1, and v4.30, and a summary of newly introduced v4.30 sentences for planer handling.
• Use cases: Updating embedded GNSS stacks, validating RTK-capable receivers, preventing satellite double-counting in telemetry, and auditing parser behavior for multi-constellation devices.

Quick Start

Load the nmea0183-knowledge-patch and ask it to validate and update your NMEA parser for multi-constellation support and v4.30 compatibility.