Nmea Sentences - Veripos LD6 Operation Manual

Procedure Title: LD6 Operations Manual (B Variant)
File Ref.: AB-V-MA-00589
5.8

NMEA SENTENCES

This section describes the message structure of the following LD6 NMEA output messages:
GGA
GSV
*Message talker ID will differ depending on calculation being computed. For example, a
GPS only solution such as Ultra will begin GPxxx, whereas a solution utilising more than
one constellation (e.g. GPS+GLONASS) such as Ultra
NMEA GGA Sentence
The NMEA GGA sentence contains time and position fix related data for a GPS system. It
includes basic quality information, which is limited to 'Fix Quality', 'Number of Satellites in
Use', 'HDOP' and 'Age of Differential GPS Data'.
Structure and Example: -
$GPGGA,hhmmss.ss,ddmm.mmm,a,dddmm.mmm,b,q,xx,p.p,a.b,M,c.d,M,x.x,nnnn*hh<CR
><LF>
$GPGGA,123519,4807.0378783,N,01131.0054784,E,1,08,0.9,545.4,M,46.9,M,,*47
GGA sentence defined: -
GGA
hhmmss.ss
ddmm.mmm
a
dddmm.mmm
b
q
xx
p.p
a.b
M
c.d
M
x.x
nnnn
*hh<CR><LF>
Rev No: A4
GLL VTG*
GRS* RMC*
Global Positioning System Fix Data
UTC of position
latitude of position
N or S, latitude hemisphere
longitude of position
E or W, longitude hemisphere
GPS Quality indicator (0 = invalid, 1 = GPS SPS, 2 = DGPS fix, 3 =
GPS PPS, 4 = Fixed RTK, 5 = Float RTK, 6 = Estimated (dead
reckoning), 7 = Manual Input Mode, 8 = Simulation Mode
number of satellites in use
horizontal dilution of precision
antenna altitude above mean-sea-level
units of antenna altitude, meters
Geoidal height
units of geoidal height, meters
age of differential GPS data
Differential reference station ID, 0000 to 1023
checksum, carriage return and line feed
ZDA GST*
HDT THS
2
will begin GNxxx.
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GSA