Message Id Vtg: Track Direction And Ground Speed - Sunsea AIoT SIMCom SIM66 Series User Manual

spd
cog
date
mv
mvE
mode
navStates
cs
<CR><LF>
NOTE
(1): GPS+SBAS+QZSS joint positioning is only supported by firmware with the version of R3.4.0.0 or
above

2.3.6 Message ID VTG: Track Direction and Ground Speed

Syntax:$--VTG,cogt,T,cogm,M,sog,N,kph,K,mode*cs
Example:$GPVTG,,T,,M,0.000,N,0.000,K,A*23
Parameter
--
cogt
T
cogm
M
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W West longitude
Speed over ground, unit: knot, fixed output of three decimal
DOUBLE
places
Course over ground, unit: degree
DOUBLE
Calculated clockwise from north
UTC date, in the format of ddmmyy
dd Day
STR
mm
yy Year
DOUBLE Magnetic declination, specified to null
STR Magnetic declination direction, specified to null
Positioning mode
N Not positioning
STR A Point positioning
D Differential positioning
E INS positioning
Navigation states flag, fixedly output 'V'
STR
V Device does not provide navigation state information
Checksum
STR A hexadecimal number obtained by calculating an XOR of
all characters from '$' to '*' in this statement
End of message termination
Format Description
Positioning system flag
GP GPS+ SBAS+QZSS joint positioning(1)
STR
GB BDS system standalone positioning
GN
Course over ground with reference to true north
DOUBLE
(0.000~359.999 degrees)
STR Course flag, specified to constant T
Course over ground with reference to MN (0.000~359.999
DOUBLE
degrees). The field is empty by default
STR Course flag, specified to constant M
SIM66 Series_NMEA Message_User Guide_V1.01
Month
Multiple system joint positioning
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