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RMC - Recommemded 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>
1. UTC of position fix
2. Status: A=data valid, V=navigation receiver warming
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, degree E/W
9. Mode indicator(see note)
10. Checksum
NOTE Positioning system Mode indicator:
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.
ZDA - Time and data
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+----+--------------------------------- 3
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+-------------------------------------- 2
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+-------------------------------------------- 1
A = Autonomous
D = Differential
E = Estimated (dead reckoning)
M = Manual input
S = Simulator
N = Data not valid
--ZDA,hhmmss.ss,xx,xx,xxxx,xx,xx*hh<CR><LF>
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+--------------------------------- 1
1. UTC
2. Day, 01 to 31(UTC)
3. Month, 01 to 12(UTC)
4. Year(UTC)
5. Local zone hours, 00h to +-13h
6. Local zone minutes, 00 to +59
as local hours
7. Checksum
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+--+--------- 8
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+------------------ 7
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+---------------------- 6
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+------------------------ 5
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+-----
+------------------------ 4
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+------------------ 4
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+------------------------- 2
APPENDIX
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+------- 10
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+--------- 9
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AP-17
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