The GNSS system identifier (aka “system ID”) was added to several messages in NMEA 4.10.
One might argue that system ID is slightly redundant, due to the presence of a talker ID for all sentences.
System ID was added to the following messages in NMEA 4.10:
| Message ID | Description |
|---|---|
| GBS | GNSS Satellite Fault Detection |
| GRS | GNSS Residuals |
| GSA | GNSS Active Satellites |
Notes:
GNSS system IDs reported in NMEA 4.10 (and newer):
| System ID | GNSS | Owner | Coverage |
|---|---|---|---|
| 1 | GPS | U.S. Government | Global |
| 2 | GLONASS | Russian Federation | Global |
| 3 | Galileo | European Union | Global |
| 4 | BeiDou | People’s Republic of China | Global |
| 5 | QZSS | Government of Japan | Regional - Asia-Pacific |
| 6 | NavIC, formerly IRNSS | Government of India | Regional - India |
Note: