Vector Sensor Reference Manual 80
6.6.1 GGA Data Message
The GGA message contains detailed GPS position information, and is the most frequently used
NMEA data message. In Table 6-6, the GGA data message is broken down into its components.
This message takes the following form.
$GPGGA,hhmmss.ss,ddmm.mmmm,s,dddmm.mmmm,s,n,qq,pp.p,saaaaa.aa,M,±xxxx.xx,M,
sss,aaaa*cc<CR><LF>
Table 6-6 GGA Data Message Defined
Field Description
hhmmss.ss UTC time in hours, minutes, seconds of the GPS position
ddmm.mmmmm Latitude in degrees, minutes, and decimal minutes
s s = N or s = S, for North or South latitude
dddmm.mmmmm Longitude in degrees, minutes, and decimal minutes
s s =E or s = W, for East or West longitude
n Quality indicator, 0 = no position, 1 = undifferentially corrected position, 2 =
differentially corrected position, 9= position computed using almanac
qq Number of satellites used in position computation
pp.p HDOP =0.0 to 9.9
saaaa.aa Antenna altitude
M Altitude units, M = meters
±xxxx.xx Geoidal separation (needs geoidal height option)
M Geoidal separation units, M = meters
sss Age of differential corrections in seconds
aaa Reference station identification
*cc Checksum
<CR><LF> Carriage return and line feed
6.6.2 GLL Data Message
The GLL message contains Latitude and Longitude. In Table 6-7, the GLL data message is broken
down into its components. This message has the following format.
$GPGLL,ddmm.mmmm,s,dddmm.mmmm,s,hhmmss.ss,s*cc<CR><LF>
Table 6-7 GLL Data Message Defined
Field Description
ddmm.mmmmm Latitude in degrees, minutes, and decimal minutes
s s = N or s = S, for North or South latitude
dddmm.mmmmm Longitude in degrees, minutes, and decimal minutes
s s = E or s = W, for East or West longitude
hhmmss.ss UTC time in hours, minutes, and seconds of GPS position
s Status, s = A = valid, s = V = invalid
*cc Checksum
<CR><LF> Carriage return and line feed
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