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NMEA Strings
http://www.gpsinformation.org/dale/nmea.htm#AAM
AAM - Waypoint Arrival Alarm ALM - Almanac data APA - Auto Pilot A sentence APBAPB - Auto Pilot B sentence BODBOD - Bearing Origin to Destination BWCBWC - Bearing using Great Circle route DTM - Datum being used. GGAGGA - Fix information GLLGLL - Lat/Lon data GRS - GPS Range Residuals GSAGSA - Overall Satellite data GST - GPS Pseudorange Noise Statistics GSVGSV - Detailed Satellite data MSKMSK - send control for a beacon receiver MSSMSS - Beacon receiver status information. RMA - recommended Loran data RMBRMB - recommended navigation data for gps RMCRMC - recommended minimum data for gps RTERTE - route message TRF - Transit Fix Data STN - Multiple Data ID VBW - dual Ground / Water Spped VTGVTG - Vector track an Speed over the Ground WCV - Waypoint closure velocity (Velocity Made Good) WPLWPL - Waypoint Location information XTC - cross track error XTEXTE - measured cross track error ZTG - Zulu (UTC) time and time to go (to destination) ZDAZDA - Date and Time
GGA - essential fix data which provide 3D location and accuracy data
$GPGGA,123519,4807.038,N,01131.000,E,1,08,0.9,545.4,M,46.9,M,,*47
| 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 = GPS fix (SPS) | ||
| 2 = DGPS fix | ||
| 3 = PPS fix | ||
| 4 = Real Time Kinematic | ||
| 5 = Float RTK | ||
| 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 | |
| 46.9,M | Height of geoid (mean sea level) above WGS84 ellipsoid | |
| (empty field) | time in seconds since last DGPS update | |
| (empty field) | DGPS station ID number | |
| *47 | the checksum data, always begins with * | |
