OmniSTAR 5220HP, Руководство пользователя

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OmniSTAR 5220HP User Manual
Issue 1.32 12/2010
62
GGA – GPS Fix Data
The GGA message includes time, position and fix related data for the GPS
receiver.
$GPGGA,hhmmss.ss,ddmm.mmmmm,D,dddmm.mmmmm,D,Q,sv,H.H,h.hh,
M,h.hh,M,A.AA,DRID*XX
Field Number Description
1 UTC of Position fix
2,3 Latitude in DDMM,MMMM, N (North) or S (South).
1
4,5 Longitude in DDDMM,MMMM format, E(East) or
W (West).
2
6 GPS Quality Indicator:
0 = No GPS,
1 = GPS,
2 = DGPS/HP/XP
3
7 Number of Satellites in Use.
8 Horizontal Dilution of Precision (HDOP).
9,10 Height above Mean Sea level in Meters, M = Meters.
11,12
Geodial Separation in Meters, M = Meters.
4
13
Age of Differential GPS Data.
5
14
Differential Reference Station ID (0000 – 1023)
6
Table 7: Description of the GGA message.
NOTES:
1. The GGA message provides 8 decimal places.\
2.
In non-differential mode, only the first four decimals are relevant.
In (VBS) differential mode, the first five decimals are relevant.
In HP/XP mode, the first seven decimals are relevant.
3. Status ‘fixed’ = converged HP/XP solution.
Status ‘float’ = unconverged HP/XP solution.
4. Geodial Separation is the difference between the WGS-84 earth ellipsoid
and mean-sea-level (MSL).
5. Time in seconds since the last OmniSTAR correction update.
6. For OmniSTAR:
reference station ID 0100 = VBS,
1000 = HP,
1008 = XP,
1016 = HP
+
( = HP+XP)