4. INSTALLATION
GLL: Latitude and longitude
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1.Latitude, N/S
2.Longitude, E/W
3.UTC of position
4.Status: A=data valid, V=data invalid
5.Mode indicator (see note)
6.Checksum
NOTE Positioning system Mode indicator:
A = Autonomous
D = Differential
E = Estimated (dead reckoning)
M = Manual input
S = Simulator
N = Data not valid
The Mode indicator field supplements the Status field. The Status field shall be set to V=invalid for all values of Operating Mode except for A=Autonomous and D=Differential. The positioning system Mode indicator and Status field shall not be null fields.