Field
Description
x.x
Altitude of position marker above/below mean sea level in
metres. If no orthometric height is available the local ellipsoi-
dal height is exported. If the local ellipsoidal height is not
available either, the WGS 1984 ellipsoidal height is exported.
x.x
Geoidal separation in metres
x.x
Age of differential data
xxxx
Differential base station ID, 0000 to 1023
h
For NMEA v4.1. Navigation Status Indicator
S = Safe
C = Caution
U = Unstable
V = Navigation status not valid
*hh
Checksum
<CR>
C
arriage
R
eturn
<LF>
L
ine
F
eed
For NMEA v4.0:
Standard Talker ID = GPS only
$GPGNS,150254.00,4724.5290110,N,00937.0837286,E,A,
10,0.8,366.282,100.143,,*33GNSS
Standard Talker ID = GNSS
$GNGNS,145309.00,4724.5293077,N,00937.0838953,E,AANA,
22,0.5,367.326,100.144,,*64
☞
When more than one GNSS is active only $GNGNS is output.
For NMEA v4.1:
Standard Talker ID = GPS only
$GPGNS,150219.00,4724.5290237,N,00937.0837225,E,A,
10,0.8,366.329,100.143,,,V*4FGNSS
Standard Talker ID = GNSS
$GNGNS,145339.00,4724.5292786,N,00937.0838968,E,AANA,
22,0.5,367.334,100.143,,,V*19
☞
When more than one GNSS is active only $GNGNS is output.
E.9
GSA - GNSS DOP and Active Satellites
$--GSA,a,x,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,x.x,x.x,x.x,h*hh<CR><LF>
Field
Description
$--GSA
Header including talker ID
Examples
Syntax
Description of fields
1022
NMEA Message Formats
