AP1.2 Configuration of NMEA Ver-3.00 Sentence
AP1-8
1.2.8 GGA - Global positioning system fix data
$--GGA, hhmmss.ss, llll.lll, a, yyyyy.yy, a, x , xx , x.x , x.x , M, x.x , M, x.x, xxxx
1 2 3 4 5 6 7 8 9 10
*hh<CR><LF>
Contents Data Note
1 UTC of position
2 Latitude, N/S
3 Longitude, E/W
4 GPS quality indicator
0= fix not available or invalid
1= GPS SPS mode, fix valid
2= differential GPS, SPS mode, fix valid
3= GPS PPS mode, fix valid
4= Real Time Kinetic. System used in
RTK mode with fixed integers
5= Float RTK. Satellite system used in
RTK mode with floating fingers
6= Estimated (dead reckoning) mode
7= Manual input mode
8= Simulator mode
The GPS quality indicator shall not be a
null field.
5
Number of satellites in use, 00-12,
may be different from the number
in view
6 Horizontal dilution of precision
7
Altitude re: mean-sea-level (geoid),
meters
8 Geoidal separation, meters
9 Age of differential GPS data
Time, position and
fix related data for a
GPS receiver.
10
Differential reference station ID,
0000-1023
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