Users manual
Appendix A
Revision #:
A
Date:
07-14-15
Page
11
of
58
GNS
–
GNSS Fix Data Format:
1
2
3
4
5
6
7
x.x , x.x , x.x ,
x
,
x
,
x
*hh <CR> <LF>
8
9
10
11
12
13
#.
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
“a”: East/West
E or W
6.
Mode Indicator for each satellite system (GPS, GLONASS, Galileo)
“A”: Autonomous
“D”: Differential
“N”: Data Invalid
7.
Number of satellites used for positioning 00 - 32
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.
Geoidal height
11.
Age of differential GPS data
n/a
12.
Differential reference station ID
n/a
13.
Navigation Status Indicator
S, C, U or V
“S”: Safe
“C”: Caution
“U”: Unsafe
“V”: Not Valid
Example:
$GNGNS,004457.000,3442.8266,N,13520.1235,E,DDN,22,0.5,40.6,36.7,,,V*60
UTC: 00:44:57.000
34 deg 42.8266 min N
135 deg 20.1235 min E
Status: Data Valid (GPS: differential, GLONASS: differential, Galileo: Invalid)
Number of satellites: 22 satellites
HDOP: 0.5
Altitude: 40.6 meters high
Geoidal height: 36.7 meters high
Navigation Status Indicator: Not Valid
$XXGNS , hhmmss.sss , ddmm.mmmm , a , dddmm.mmmm , a , c--c , xx ,
