Airmar LB150 - Manual (Page 10)

LB150 WeatherStation Technical Manual revision 0.013
Proprietary and Confidential
PRELIMINARY - DRAFT 7
NMEA 0183 TRANSMITTED SENTENCE
$GP
GGA
Summary
NMEA 0183 standard GPS Fix Data.
Syntax
$GPGGA,<1>,<2>,<3>,<4>,<5>,<6>,<7>,<8>,
<9>,<10>,<11>,<12>,<13>,<14>*hh
Fields
<1> UTC of position, in the form hhmmss
<2> Latitude, to the nearest .0001 minute
<3> N if field <2> is North Latitude
S if field <2> is South Latitude
<4> Longitude, to the nearest .0001 minute
<5> E if field <4> is East Longitude
W if field <4> is West Longitude
<6> 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 Kinematic (RTK)
5 = Float RTK
6 = Estimated (dead reckoning) Mode
7 = Manual Input Mode
8 = Simulator Mode
When providing data from the LB150 WeatherStation’s internal GPS,
the only valid values for the GPS quality indicator are 0, 1, and 2.
<7> Number of satellites in use, 0-12
<8> Horizontal dilution of precision (HDOP)
<9> Altitude relative to mean-sea-level (geoid), meters (to the nearest
whole meter)
<10> M
<11> Geoidal separation, meters (to the nearest whole meter). This field is
not provided by the LB150 WeatherStation, and appears as a null field.