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15-4
RMC - Recommended minimum specific GPS/TRANSIT data
$--RMC,hhmmss.ss,A,llll.lll,a,yyyyy.yyy,a,x.x,x.x,xxxxxx,x.x,a,a*hh<CR><LF>
| | | | | | | | | | | | |
| | | | | | | | | | | | +--- 10
| | | | | | | | | | | +----- 9
| | | | | | | | | +--+------- 8
| | | | | | | | +--------------- 7
| | | | | | | +--------------------- 6
| | | | | | +------------------------- 5
| | | | +---+---------------------------- 4
| | +---+---------------------------------------- 3
| +--------------------------------------------------- 2
+---------------------------------------------------------- 1
1. UTC of position fix
2. Status: A=data valid, V=navigation receiver warning
3. Latitude, N/S
4. Longitude, E/W
5. Speed over ground, knots
6. Course over ground, degrees true
7. Date: dd/mm/yy
8. magnetic variation, degrees E/W
9. Mode indicator(see note)
10. 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.
MWV – Wind speed and angle
$--MWV,x.x,a,x.x,a,A*hh<CR><LF>
| | | | | |
| | | | | +----------- 6
| | | | +------------- 5
| | | +-------------- 4
| | +---------------- 3
| +------------------ 2
+-------------------- 1
1.2. Wind angle (000.0 to 359.9), Reference (R: Relative, T: True)
3.4. Wind speed (00.00 to 99.99), Units (K/M/N)
5. Status (A: OK, V: NG)
6. Checksum