Em-Trak A100 - Page 67

Technical reference
Page 65
6.8.8 GGA - Global positioning system (GPS) fix data
This sentence provides time, position and fix related data from a GPS receiver.
6.8.9 GLL - Geographic position, latitude and longitude
This sentence provides the latitude and longitude for vessel position along with fix time and status.
6 x.x
Probability of missed detection for most likely failed satellite - NOT USED
7 x.x Estimate of bias on most likely failed satellite - NOT USED
8 x.x Standard deviation of bias estimate - NOT USED
$--GGA, hhmmss.ss, llll.ll, a, yyyyy.yy, a, x, xx, x.x, x.x, M, x.x, M, x.x, xxxx*hh<CR><LF>
Field
number
Description
1 hhmmss.ss UTC time of position fix
2 llll.ll, a Latitude N/S
3 yyyyy.yy, a Longitude E/W
4 x GPS quality indicator
5 xx No. of satellites in use, 00-12 - NOT USED
6 x.x
Horizontal dilution of precision - NOT USED
7 x.x
Antenna altitude above/below mean sea level (geoid) - NOT USED
8 M Units of antenna altitude, m - NOT USED
9 x.x Geoidal separation - NOT USED
10 M Units of geoidal separation, m - NOT USED
11 x.x Age of diff. GPS data - NOT USED
12 xxxx
Differential reference station ID 0000-1023 - NOT USED
$--GLL, llll.ll, a, yyyyy.yy, a, hhmmss.ss, A, a *hh<CR><LF>
Field
number
Description
1 llll.ll, a Latitude, N/S
2 yyyyy.yy, a Longitude , E/W
$--GBS, hhmmss.ss, x.x, x.x, x.x, xx, x.x, x.x, x.x *hh <CR><LF>