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GGA - Global Positioning System Fix Data:
Time, position a n d f i x related data for GPS receiver.
This sentence is available in MK8 with differential software and MK9 only.
Field:
1
2
explanation:
1. UTC o f Position
2. GPS Latitude
3.Latitude.N or S
4. GPS Longitude
5. Longitude E
G P S
6.
Quality indicator QI (0
1 = GPS fix, 2 = Differential GPS f i x )
7.
Number of
8. Horizontal
9. A n t e n n a height
of
10. Units
ellipsoid a n d mean-sea-level (geoid)
12. Units o f geoidai separation, meters
1 3 . A g e o f Differential
14. Differential reference station ID, 0000
This sentence is available in MK9
field:
3
5
2
explanation:
2. Total number o f messages being transmitted (always
3.
Message number (always 1 ( o n e ) )
4. Message mode: c
5.
Route identifier (always 00)
6.
Way p o i n
7. Additional waypoint identifiers
8. W a y p o i n t 'n' identifier
The actual track made g o o d and speed over ground,
field:
2
3 4
5 6
2.
Track degrees
3. True, T
4. Track degrees
5.
Magnetic, M
6.
Speed over ground
7.
Knots, N
8.
Speed over ground
9. Kilometres per
3 4
or W
Satellites being used
precision (HDOP)
dilution of
antenna height, meters
G P S
data
only.
6
8
7
complete route, all waypoints
=
id en ti f i e r
t
7 8
9
hour, K
5 6 7 8
9
GPS n o t available or invalid,
=
1023
-
COG
14
1 (one))
and
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