: Version 4.11 addressed specific field errors in earlier 4.x versions, particularly regarding the interpretation of Satellite Vehicle IDs (SVIDs) when the Talker ID is GN . Core Technical Specifications
The NMEA 0183 Version 4.11 standard, released in November 2018, is a critical protocol for marine electronics communication. It defines the electrical signal requirements, data transmission protocol, and specific sentence formats used by instruments like GPS receivers, autopilots, and depth sounders. Key Updates in Version 4.11 Nmea 0183 Version 4.11 Pdf-
: Standardized prefixes like GN (Global Navigation Satellite System) are used when data combines multiple satellite sources, while GP remains for GPS and GA for Galileo. : Version 4
Despite these updates, the fundamental architecture of NMEA 0183 remains consistent to ensure backward compatibility: NMEA 0183 - National Marine Electronics Association Key Updates in Version 4
The primary purpose of the 4.11 update was to improve support for the rapidly expanding range of . While older versions focused heavily on the U.S. GPS system, Version 4.11 provides comprehensive coverage for international constellations:
: Updated sentences for improved satellite tracking, allowing for more detailed information on "satellites in view" (GSV) and "active satellites" (GSA) across multiple constellations.
: Includes specific interface clarifications for GLONASS (Russia), GALILEO (Europe), BDS (China), QZSS (Japan), and NavIC (India).