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APPENDIX
AP-15
RMB - Recommended minimum navigation information
$--RMB,A,x.x,a,c--c,c--c,llll.lll,a,yyyyy.yyy,a,x.x,x.x,x.x,A,a*hh<CR><LF>
| | | | | | | | | | | | | | |
| | | | | | | | | | | | | | +--- 13
| | | | | | | | | | | | | +----- 12
| | | | | | | | | | | | +------- 11
| | | | | | | | | | | +---------- 10
| | | | | | | | | | +-------------- 9
| | | | | | | | | +------------------ 8
| | | | | | | +-----+--------------------- 7
| | | | | +----+--------------------------------- 6
| | | | +--------------------------------------------- 5
| | | +-------------------------------------------------- 4
| | +------------------------------------------------------ 3
| +--------------------------------------------------------- 2
+------------------------------------------------------------ 1
1. Data status: A=data valid, V=navigation receiver warning
2. Cross track error(see note 2) n.miles
3. Direction to steer L/R
4. Origin waypoint ID
5. Destination waypoint ID
6. Destination waypoint latitude,N/S
7. Destination waypoint longitude,E/W
8. Range to destination, n.miles(see note 1)
9. Bearing to destination, degrees true
10. Destination closing velocity, knots
11. Arrival status: A=arrival circle entered or perpendicular passed
12. Mode indicator(see note 3)
13. Checksum
NOTES
1 If range to destination exceeds 999.9 nautical miles, display 999.9.
2 If cross track error exceeds 9.99 nautical miles, display 9.99.
3 Positioning system Mode indicator:
A = Autonomous
D = Dif
ferential
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.
Data is used in case of A=data valid and A and D. Data is not used in
case of V=data invalid, E, M, S and N.