BlueTexGPS Mobitex Integration guide v.2.6
8
GPS NMEA v0183
The GPS data have the standard format of NMEA v0183.
SPECIFICATION OF NMEA v0183 SENTENCES
ZDA
– Time and date.
$GPZDA,hhmmss.ss,xx,xx,xxxx,,*hh<CR><LF>
Field
data:
1:
UTC
2: Day (01 to 31)
3: Month (01 to 12)
4:
Year
5:
unused
6:
unused
hh:
checksum
GGA
– GPS fix data.
$GPGGA,hhmmss.ss,llll.lll,a,nnnnn.nnn,b,t,uu,v.v,w.w,M,x.x,M,y.y,zzzz*hh
<CR><LF>
Field
data:
1: UTC of Position
2,3: Latitude, N (North) or S (South)
4,5: Longitude, E (East) or W (West)
6: GPS Quality Indicator: 0 = No GPS, 1 = GPS, 2 = DGPS
7: Number of Satellites in Use
8: Horizontal Dilution of Precision (HDOP)
9,10: Antenna Altitude in Meters, M = Meters
11,12: Geoidal Separation in Meters, M=Meters. Geoidal separation is the difference
between the WGS-84 earth ellipsoid and mean sealevel
13: Age of Differential GPS Data. Time in seconds since the last Type 1 or 9 Update
14: Differential Reference Station ID (0000 to 1023)
hh:
Checksum
GLL
- Geographic Position - Latitude/Longitude.
$GPGLL,llll.lll,a,yyyyy.yyy,a,hhmmss.ss,A,i*hh<CR><LF>
1,2: Latitude, N (North) or S (South)
3,4: Longitude, E (East) or W (West)
5: UTC of position
6: Status: A = Valid, V= Invalid
7: Mode Indicator
A=Autonomous
Mode
D=Differential
Mode
E=Estimated (dead reckoning) Mode
M=Manual Input Mode
S=Simulated
Mode
N-Data Not Valid
hh:
Checksum
VTG
- Track Made Good and Ground Speed.
$GPVTG,x.x,T,x.x,M,x.x,N,x.x,K,i*hh<CR><LF>
1: Track made good in degrees true.
2: Track made good in degrees magnetic.
3,4: Speed over the ground (SOG) in knots.
5,6: Speed over the ground (SOG) in kilometer per hour.
7: Mode Indicator: A=Autonomous Mode, D=Differential Mode,
E=Estimated (dead reckoning) Mode, M=Manual Input Mode,
S=Simulated Mode, N-Data Not Valid
hh:
Checksum
GSA
- GPS DOP and Active Satellites
