Vel : Vitesse; Vtg : Cap Fond Et Vitesse Fond; Zda : Date & Heure - Spectra Precision GNSS SP90m Guide Utilisateur

VEL : Vitesse

$PASHR,VEL,f1,m2,f3,f4,f5,f6,f7,f8,d9*cc
Parameter
f1 Reserved
m2 Current UTC time of velocity fix (hhmmss.ss)
f3 Easting velocity, in m/s
f4 Northing velocity, in m/s
f5 Vertical velocity, in m/s
f6 Easting velocity RMS error, in mm/s
f7 Northing velocity RMS error, in mm/s
f8 Vertical velocity RMS error, in mm/s
Applied effective velocity smoothing interval,
d9
in ms (empty if unknown)
*cc Checksum

VTG : Cap fond et vitesse fond

$GPVTG,f1,T,f2,M,f3,N,f4,K,c5*cc
Parameter
COG (with respect to True North)
f1,T
T for "True" North: COG orientation
COG (with respect to Magnetic North)
f2,M
M for "Magnetic" North: COG orientation
SOG (Speed Over Ground)
f3,N
N for "knots": SOG unit
SOG (Speed Over Ground)
f4,K
K for "km/hr": SOG unit
Mode indicator:
• A: Autonomous mode
c5
• D: Differential mode
• N: Data not valid
*cc Checksum
ZDA : Date & heure
$GPZDA,ZDA,m1,d2,d3,d4,d5,d6*cc
Parameter
m1 UTC time (hhmmss.ss)
d2 Current day
d3 Current month
d4 Current year
d5 Local zone offset from UTC time (hour)
d6 Local zone offset from UTC time (minutes)
*cc Checksum
Description
Description
Description
Range
1
*00-*FF
Range
000.00-359.99
000.00-359.99
000.00-999.999
000.00-999-999
A, D, N
*00-*FF
Range
000000.00-
235959.99
01-31
01-12
0000-9999
-13 to +13
00-59
*00-*FF
155