Command and Log Reference
34
ID
Field
Description
Symbol
Example
1
$GLOGGA
Log header
$GLOGGA
2
utc
UTC time of the current position
(hours/minutes/seconds/
decimal seconds)
hhmmss.ss
170659.00
3
lat
Latitude (DDmm.mm)
IIII.II
4001.1220
4
lat dir
Latitude direction (N = North, S =
South)
a
N
5
lon
Longitude (DDDmm.mm)
yyyyy.yy
11600.3622
6
lon dir
Longitude direction (E = East, W =
West)
a
E
7
GPS quality
Quality indicators of positioning
results:
0 = Positioning not available or invalid
1 = Single point
2 = Pseudorange differential or SBAS
4 = RTK fixed solution
5 = RTK floating solution
6 = INS
7 = User fixed position
x
1
8
# sats
Number of satellites in use, may not
the same as the number in view.
xx
10
9
hdop
Horizontal dilution of precision
x.x
1.0
10
alt
Antenna height, above/below the
mean sea level
x.x
1098.44
11
a-units
Units of antenna height (M = meter)
M
M
12
undulation
Undulation: the vertical separation
between the geoid and the WGS84
ellipsoid
x.x
-15.174
13
u-units
Units of undulation (M = meter)
M
M
14
age
Age of differential correction data,
seconds
xx
This value is set to
00
when
no
correction data
available
15
stn ID
Differential base station ID, between
0000 and 1023
xxxx
This value is set to
00
when
no
correction data
available
16
*xx
Checksum
*hh
*3F
17
[CR][LF]
Sentence terminator
[CR][LF]
