u-blox ZED-F9P Interface Description - Manual
Advance Information
the GPS Receiver reports a Latitude of 4717.112671 North and Longitude of 00833.914843 East, this is
Latitude 47 Degrees, 17.112671 Minutes
Longitude 8 Degrees, 33.914843 Minutes
or
Latitude 47 Degrees, 17 Minutes, 6.76026 Seconds
Longitude 8 Degrees, 33 Minutes, 54.89058 Seconds
or
Latitude 47.28521118 Degrees
Longitude 8.56524738 Degrees
4.1.6 Position Fix Flags
This section shows how u-blox implements the NMEA protocol and the conditions determining how flags are
set.
Flags in NMEA 4.1 and above
NMEA Message
Field
GLL, RMC
status
GGA
quality
GLL, VTG
posMode
RMC, GNS
posMode
No position fix (at power-up, after losing satellite lock)
V
0
N
N
GNSS fix, but user limits exceeded
V
0
N
N
Dead reckoning fix, but user limits exceeded
V
6
E
E
Dead reckoning fix
A
6
E
E
RTK float
A
5
D
F
RTK fixed
A
4
D
R
2D GNSS fix
A
1 / 2
A / D
A / D
3D GNSS fix
A
1 / 2
A / D
A / D
Combined GNSS/dead reckoning fix
A
1 / 2
A / D
A / D
See below (1)
See below (2)
See below (3)
See below (3)
(1) Possible values for
status
: V = Data invalid, A = Data valid
(2) Possible values for
quality
: 0 = No fix, 1 = Autonomous GNSS fix, 2 = Differential GNSS fix, 4 = RTK fixed, 5
= RTK float, 6 = Estimated/Dead reckoning fix
(3) Possible values for
posMode
: N = No fix, E = Estimated/Dead reckoning fix, A = Autonomous GNSS fix, D =
Differential GNSS fix, F = RTK float, R = RTK fixed
Flags in NMEA 2.3 and above
NMEA Message
Field
GLL, RMC
status
GGA
quality
GSA
navMode
GLL, VTG,
RMC, GNS
posMode
No position fix (at power-up, after losing satellite lock)
V
0
1
N
GNSS fix, but user limits exceeded
V
0
1
N
Dead reckoning fix, but user limits exceeded
V
6
2
E
Dead reckoning fix
A
6
2
E
2D GNSS fix
A
1 / 2
2
A / D
3D GNSS fix
A
1 / 2
3
A / D
Combined GNSS/dead reckoning fix
A
1 / 2
3
A / D
See below (1)
See below (2)
See below (3)
See below (4)
UBX-18010854 - R04
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