LOCOSYS Technology Inc.
20F.-13, No.79, Sec. 1, Xintai 5th Rd.,
Xizhi Dist., New Taipei City 221, Taiwan
℡
886-2-8698-3698
886-2-8698-3699
www.locosystech.com/
Page
9/23
© 2018 LOCOSYS Technology Inc.
8
Software interface
8.1
NMEA output message
Table 8.1-1 NMEA output message
NMEA record
Description
GGA
Global positioning system fixed data
GLL
Geographic position - latitude/longitude
GSA
GNSS DOP and active satellites
GSV
GNSS satellites in view
RMC
Recommended minimum specific GNSS data
VTG
Course over ground and ground speed
GGA--- Global Positioning System Fixed Data
Table 8.1-2 contains the values for the following example:
$GNGGA,053740.000,2503.6319,N,12136.0099,E,1,08,1.1,63.8,M,15.2,M,,*7A
Table8.1- 2
GGA Data Format
Name
Example
Units
Description
Message ID
$GNGGA
GGA protocol header, GN for GPS+GLONASS,
GP for GPS only,
GL for GLONASS only
UTC Time
053740.000
hhmmss.sss
Latitude
2503.6319
ddmm.mmmm
N/S indicator
N
N=north or S=south
Longitude
12136.0099
dddmm.mmmm
E/W Indicator
E
E=east or W=west
Position Fix Indicator
1
See Table 8.1-3 (2: DGPS(RTCM) or SBAS)
Satellites Used
08
Range 0 to 33
HDOP
1.1
Horizontal Dilution of Precision
MSL Altitude
63.8
meters
Units
M
meters
Geoid Separation
15.2
meters
Units
M
meters
Age of Diff. Corr.
second
Null fields when DGPS is not used
Diff. Ref. Station ID
Checksum
*7A
<CR> <LF>
End of message termination
