KGP-920
Chapter 11
Technical Reference
Description Contents of data field
Recommended minimum specific GPS data
GPRMC
Routes
*A maximum of four Waypoints are outputted.
$ GP RMC, hhmmss.ss, A, lllll.lll, a, yyyyy.yyy, a, x.x, x.x, xxxxxx, x.x, a, a*hh <CR><LF>
UTC of position fix
(hr/min/sec)
Latitude,
N/S
Longitude,
E/W
Course over ground,
degree true
Date:
dd/mm/yy
Start of sentence
Talker device
Sentence type
A: Data valid
V:
Navigation receiver warning
Speed over ground,
knots
Magnetic variation
Degrees, E/W
Mode indicator
A: Autonomous
D: Differential
M: Manual input
S: Simulator
N: Data not valid
GPRTE
Course over ground and ground speed
$ GP RTE, x.x, x.x, a, c--c, c--c, …... c--c*hh <CR><LF>
Waypoint “n” identifier
Sentence type
Talker device
Start of sentence
C = complete route, all waypoints
Message mode :
W = working route, first listed waypoint is “FROM”,
second is “TO” and remaining are rest of true
Additional waypoint identifiers
Waypoint identifier
Route identifier
Message number
Total number of messages being transmitted
GPVTG
$ GP VTG, x.x, T, x.x, M, x.x, N, x.x, K, a*hh <CR><LF>
Speed over ground, knots
Sentence type
Talker device
Start of sentence
Course over ground, degree true
Speed over ground, km/h
Mode indicator
A: Autonomous
D: Differential
M: Manual input
S: Simulator
N: Data not valid
Course over ground, degree magnetic
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