Users manual
Appendix A
Revision #:
A
Date:
07-14-15
Page
9
of
58
GGA
–
Global Positioning System Fix Data Format:
1
2
3
4
5
6
7
x.x , x.x , M , x.x , M ,
xxx
,
xxx
*hh <CR> <LF>
8
9
10
11
12
13
14
#.
1.
Description
UTC
“hh”: hour
Range
00 - 23
“mm”: minute
00 - 59
2-3.
“ss.sss”: second
Latitude
00.000 - 59.999
“dd”: degree
00 - 90
“mm.mmmm”: minute
“a”: North/South
00.0000 - 59.9999
N or S
4-5.
Longitude
“ddd”: degree
000 - 180
“mm.mmmm”: minute
00.0000 - 59.9999
6.
“a”: East/West
GPS Quality Indication
E or W
0 - 2
“0”: Fix not available or invalid
7.
Number of satellites used for positioning
“1”: Valid fix
“2”: DGPS positioning
00 – 12 [*1]
8.
Horizontal dilution of precision (HDOP)
0.0-50.0
Note: A null field is output while positioning is interrupted.
9.
Altitude above/below mean sea-level (geoid)
10.
Unit of Altitude, meter
M
11.
Geoidal height
12.
Unit of Geoidal height
M
13.
Age of differential GPS data
n/a
14.
Differential reference station ID
n/a
Example:
$GPGGA,025411.516,3442.8146,N,13520.1090,E,1,11,0.8,24.0,M,36.7,M,,*66
UTC: 02:54:11.516
34 deg 42.8146 min N
135 deg 20.1090 min E
Status: Valid fix Number of satellites: 11 satellites
HDOP: 0.8
Altitude: 24.0 meters high
Geoidal height: 36.7 meters high
[*1] GPS, SBAS, QZSS only. Galileo and GLONASS are not counted. Upper limit is 12.
$XXGGA , hhmmss.sss , ddmm.mmmm , a , dddmm.mmmm , a , x , xx ,
