Field | Description | Format |
(a) | ||
1 | Universal Time Coordinated (UTC) (Greenwich time) | HHMMSS.SSS |
2 | Latitude | DDMM.MMM |
3 | Hemisphere. North/South | N/S |
4 | Longitude | DDDMM.MMM |
5 | Hemisphere. East/West | E/W |
6 | Fix valid. No fix/Normal fix/DGPS fix | 0/1/2 |
7 | Number of satellites in view. 00-12 | NN |
8 | Horizontal dilution of precision (meters) | D.DDD |
9 | Altitude above mean sea level (meters) | D.DDD |
10 | Unit of field 9 | M |
11 | Difference between WGS84 ellipsoid and mean sea level (meters) | D.DDD |
12 | Unit of field 10 | M |
13 | DGPS specific | |
14 | D:o | |
Sample: $GPGGA,145326.347,5053.7408,N,00436.4477,E,1,03,24.3,112.5,M,,,,0000*30 | ||
(b) | ||
Field | Description | Format |
1 | Latitude | DDMM.MMM |
2 | Hemisphere. North/South | N/S |
3 | Longitude | DDDMM.MMM |
4 | Hemisphere. East/West | E/W |
5 | Universal Time Coordinated (UTC) (Greenwich time). | HHMMSS.SSS |
6 | Valid/Not valid | A/V |
Sample: $GPGLL,5917.102,N,01807.157,E,201349,A*23 | ||
(c) | ||
Field | Description | Format |
1 | Universal Time Coordinated (UTC) (Greenwich time). | HHMMSS.SSS |
2 | Valid/Not valid | A/V |
3 | Latitude | DDMM.MMM |
4 | Hemisphere. North/South | N/S |
5 | Longitude | DDDMM.MMM |
6 | Hemisphere. East/West | E/W |
7 | Speed over ground (knots) | D.DDD |
8 | Direction of movement (degrees) | DDD.D |
9 | Date | DDMMYY |
10 | Magnetic variation (degrees) | DDD.D |
11 | Magnetic variation direction | East/West E/W |
Sample: $GPRMC,201348,A,5917.102,N,01807.157,E,000.0,360.0,070103,003.3,E*7E | ||
(d) | ||
Field | Description | Format |
1 | Direction of movement True North (degrees) | DDD.D |
2 | Type of direction for field 1 | T |
3 | Direction of movement Magnetic North (degrees) | DDD.D |
4 | Type of direction for field 3 | M |
5 | Speed (knots) | D.DDD |
6 | Unit for field 5 | N |
7 | Speed (km/h) | D.DDD |
8 | Unit for field 7 | K |
Sample: $GPVTG,110.5,T,M,0.89,N,1.7,K*52 |
Table 2: (a) GGA, GPS fix data; (b) GLL, geographic position (latitude/longitude); (c) RMC, recommended minimum navigation information; (d) VTG, track made good, and ground speed.