Sunsea AIoT SIMCom SIM66 Series, User Manual, Page: 15 / 25

SIM66 Series_NMEA Message_User Guide_V1.01
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(1): GPS+SBAS+QZSS joint positioning is only supported by firmware with the version of R3.4.0.0 or
above
2.3.8 Message ID GST: Output GNSS Pseudorange Error
Syntax:$GST,time,rngRMS,stdMajor,stdMinor,hdg,stdLat,stdLon,stdAlt*cs
Example:$GPGST,060845.00,0.6,,,,0.07,0.09,0.09*47
Parameter Format Description
-- STR
Positioning system flag
GP GPS+ SBAS+QZSS joint positioning(1)
GB BDS system standalone positioning
GN Multiple system joint positioning
time STR
UTC time, in the format of hhmmss.ss
hh Hours
mm Minutes
ss.ss Seconds
rngRMS DOUBLE
Mean square error of pseudo range error in meters, with a
maximum of 3750000
stdMajor DOUBLE
Semi-major axis of the error ellipse, in meters.
Specified to null
stdMinor DOUBLE
Semi-minor axis of the error ellipse, in meters.
Specified to null
hdg DOUBLE
Semi-major axis direction of the error ellipse in degrees,
clockwise from north. Specified to null
stdLat DOUBLE
The mean square error along the latitudinal direction, in
meters
stdLon DOUBLE
The mean square error along the longitudinal direction, in
meters
stdAlt DOUBLE
The mean square error along the altitudinal direction, in
meters
cs STR
Checksum
A hexadecimal number obtained by calculating an XOR of
all characters from '$' to '*' in this statement
<CR><LF> End of message termination
(1): GPS+SBAS+QZSS joint positioning is only supported by firmware with the version of R3.4.0.0 or
above
NOTE
NOTE