NMEA GGA Message

The GGA Format provides essential fix data which includes 3D location and accuracy data.

There are slight differences between the output of this NMEA Message between ASCII Time Code messages that are output through ATC settings and option cards, and NMEA Out messages designed for navigational purposes. Choose the correct reference table below.

Timing GGA Message

Example message:

$GPGGA,123519.00,4807.038,N,01131.000,E,1,08,0.9,545.4,M,-164.0,M,,,,*47

Note: Not all fields below are available on all products in all applications.

NOTE: The GGA format does not support precision timing and 1PPS functionality; the Web UI may permit the selection of Message or PPS Pin as PPS Source, but the NMEA GGA Message will not use either. If this data is required for your application, use the ZDA Message format instead (see NMEA ZDA Message).

Where:

GGA	Global Positioning System Fix Data
123519.00	Fix taken at 12:35:19 UTC
4807.038,N	Latitude 48 deg 07.038' N
01131.000, E	Longitude 11 deg 31.000' E
1	Fix quality: 0 = Invalid 1 = GNSS fix (SPS) 2 = DGPS fix 3 = PPS fix 4 = Real Time Kinematic 6 = estimated (dead reckoning) (2.3 feature) 7 = Manual input mode 8 = Simulation mode
08	Number of satellites being tracked
0.9	Horizontal dilution of position
545.4,M	Altitude, Meters, above mean sea level (geoid)
-164.0,M	Height of geoid (mean sea level) above WGS84 ellipsoid
(empty field)	(Field not provided in this setup)
*47	Checksum data, always begins with *

Navigational GGA Message

Example message:

$GPGGA,123519,4807.038,N,01131.000,E,1,08,,545.440,M,,,,*47

Where:

GGA	Global Positioning System Fix Data
123519	Fix taken at 12:35:19 UTC
4807.038,N	Latitude 48 deg 07.038' N
01131.000, E	Longitude 11 deg 31.000' E
1	Fix quality: 0 = Invalid 1 = GNSS fix (SPS) 2 = DGPS fix 3 = PPS fix 4 = Real Time Kinematic 6 = estimated (dead reckoning) (2.3 feature) 7 = Manual input mode 8 = Simulation mode
08	Number of satellites being tracked [00-12]
(empty field)	(Field not provided in this setup)
545.440,M	Altitude, Meters, above mean sea level (geoid)
(empty field)	(Field not provided in this setup)
(empty field)	(Field not provided in this setup)
(empty field)	(Field not provided in this setup)
*47	Checksum data, always begins with *