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

Lon
E
spd
cog
date
mv
mvE
mode
cs
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2.4.6 Message ID VTG: Output Track Direction and Ground Speed

Syntax:$VTG,cogt,T,cogm,M,sog,N,kph,K,mode*cs
Example:$GNVTG,0.000,T,,M,0.000,N,0.000,K,A*13
Parameter
--
cogt
T
cogm
sog
N
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Longitude, in the format of dddmm.mmmmmm
STR ddd
mm.mmmmmm
East longitude or west longitude indicator
STR E East longitude
W West longitude
DOUBLE Speed over ground, unit: knot
Course over ground, unit: degree
DOUBLE
Calculated clockwise from north
UTC date, in the format of ddmmyy
dd Day
mm
STR
yy Year
If the exact year, month, and day are not parsed, the date
part appears blank
DOUBLE Magnetic declination, specified to null
STR Magnetic declination direction, specified to constant E
Positioning mode
N Not positioning
STR A Point positioning
D Differential positioning
E INS positioning
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
BD BDS system standalone positioning
GN Multiple system joint positioning
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
DOUBLE Speed over ground, unit: knot
STR Unit of speed, specified to constant N
SIM66 Series_NMEA Message_User Guide_V1.01
Degrees
Minutes
Month
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