====== NMEA Strings ======


=== 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 *||

===  All Strings  ===

|[[http://www.gpsinformation.org/dale/nmea.htm#AAM|AAM]] - Waypoint Arrival Alarm|
|[[http://www.gpsinformation.org/dale/nmea.htm#ALM|ALM]] - Almanac data|
|APA - Auto Pilot A sentence|
|[[http://www.gpsinformation.org/dale/nmea.htm#APB|APB]] - Auto Pilot B sentence|
|[[http://www.gpsinformation.org/dale/nmea.htm#BOD|BOD]] - Bearing Origin to Destination|
|[[http://www.gpsinformation.org/dale/nmea.htm#BWC|BWC]] - Bearing using Great Circle route|
|DTM - Datum being used|
|[[http://www.gpsinformation.org/dale/nmea.htm#GGA|GGA]] - Fix information|
|[[http://www.gpsinformation.org/dale/nmea.htm#GLL|GLL]] - Lat/Lon data|
|GRS - GPS Range Residuals|
|[[http://www.gpsinformation.org/dale/nmea.htm#GSA|GSA]] - Overall Satellite data|
|GST - GPS Pseudorange Noise Statistics|
|[[http://www.gpsinformation.org/dale/nmea.htm#GSV|GSV]] - Detailed Satellite data|
|[[http://www.gpsinformation.org/dale/nmea.htm#MSK|MSK]] - send control for a beacon receiver|
|[[http://www.gpsinformation.org/dale/nmea.htm#MSS|MSS]] - Beacon receiver status information|
|RMA - recommended Loran data|
|[[http://www.gpsinformation.org/dale/nmea.htm#RMB|RMB]] - recommended navigation data for gps|
|[[http://www.gpsinformation.org/dale/nmea.htm#RMC|RMC]] - recommended minimum data for gps|
|[[http://www.gpsinformation.org/dale/nmea.htm#RTE|RTE]] - route message|
|TRF - Transit Fix Data|
|STN - Multiple Data ID|
|VBW - dual Ground / Water Spped|
|[[http://www.gpsinformation.org/dale/nmea.htm#VTG|VTG]] - Vector track an Speed over the Ground|
|WCV - Waypoint closure velocity (Velocity Made Good)|
|[[http://www.gpsinformation.org/dale/nmea.htm#WPL|WPL]] - Waypoint Location information|
|XTC - cross track error|
|[[http://www.gpsinformation.org/dale/nmea.htm#XTE|XTE]] - measured cross track error|
|ZTG - Zulu (UTC) time and time to go (to destination)|
|[[http://www.gpsinformation.org/dale/nmea.htm#ZDA|ZDA]] - Date and Time |