SIM66 Series_NMEA Message_User Guide_V1.01
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2.5.4 NAVACC: Output Accuracy Information of Receiver Positioning Speed
Measurement
Syntax:$NAVACC,time,status,pAcc,vAcc,cAcc*cs
Example:$NAVACC,085206.00,A,2480, 70,1250*cs
Parameter
Format
Description
time
STR
UTC time, in the format of hhmmss.sss
hh Hours
mm Minutes
ss.sss Seconds
status
UINT
Data validity identification
V Invalid
A Valid
pAcc
UINT
Horizontal positioning accuracy, mean square deviation of
two-dimensional horizontal positioning error, in 0.001m
vAcc
UINT
Accuracy of horizontal velocity measurement, mean square
error of two-dimensional velocity measurement in
Horizontal Direction, unit: 0.001 m/s
cAcc
UINT
Ground course accuracy, in 0.001 degrees
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