Memsic DMU380SA Series, User Manual

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DMU380SA Series
User’s Manual
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Doc# 7430-0026 Rev. 01 Page 80
11 Appendix B. NMEA Message Format
The GPS receiver outputs data in NMEA-0183 format at 9600 Baud, 8 bits, no parity bit,
and 1 stop bit. The GGA and RMC message packet formats are explained in this section.
GGA - GPS fix data 11.1
Time and position, together with GPS fixing related data (number of satellites in use, and
the resulting HDOP, age of differential data if in use, etc.).
$GPGGA,hhmmss.ss,Latitude,N,Longitude,E,FS,NoSV,HDOP,msl,m,
Altref,m,DiffAge,DiffStation*cs<CR><LF>
Name
ASCII String
Description
Format Example
$GPGGA string $GPGGA
Message ID:
GGA protocol header
hhmmss.ss hhmmss.sss 092725.00 UTC Time: Current time
Latitude dddmm.mmmm 4717.11399 Latitude: D minutes
N character N
N/S Indicator:
N=north or S=south
Longitude dddmm.mmmm 00833.91590
Longitude:
D minutes
E character E
E/W indicator:
E=east or W=west
FS 1 digit 1
Position Fix Indicator
(See Table below)
NoSV numeric 8
Satellites Used:
Range 0 to 12
HDOP numeric 1.01 HDOP: Horizontal Dilution of Precision
msl numeric 499.6 MSL Altitude (m)
m character M Units: Meters (fixed field)
Altref blank 48.0 Geoid Separation (m)
m blank M Units: Meters (fixed field)
DiffAge numeric
Age of Differential Corrections (sec):
Blank (Null) fields when DGPS is not
used
DiffStation numeric 0 Diff. Reference Station ID
cs hexadecimal *5B Checksum