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Technical Provisions for Mode S Services and Extended Squitter

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DRAFT - Working Paper ASP TSGWP11-01 <strong>for</strong> review by the TSG during the meeting in June 2011 in Paris<br />

Appendix C C-81<br />

Figure C-17. TIS-B Coarse Airborne Position Message<br />

1 IMF (§C.3.4.5.1) Purpose: To provide airborne position in<strong>for</strong>mation <strong>for</strong><br />

2<br />

3<br />

SURVEILLANCE STATUS<br />

aircraft that are not equipped with 1090 MHz ADS-B<br />

when TIS-B service is based on moderate quality<br />

4 MSB surveillance data.<br />

5<br />

6<br />

SERVICE VOLUME ID (SVID)<br />

7 LSB<br />

8<br />

9<br />

10<br />

11<br />

12<br />

MSB<br />

13<br />

14<br />

15<br />

16<br />

17<br />

18<br />

PRESSURE ALTITUDE<br />

19 LSB<br />

20<br />

21<br />

22<br />

GROUND TRACK STATUS (1=Valid, 0=Invalid)<br />

23 GROUND TRACK ANGLE<br />

24<br />

25<br />

26<br />

27<br />

(§C.3.4.5.5)<br />

28 GROUND SPEED<br />

29<br />

30<br />

31<br />

(§C.3.4.5.6)<br />

32 CPR FORMAT (F) (0=Even, 1=Odd)<br />

33<br />

34<br />

35<br />

36<br />

37<br />

MSB<br />

38 CPR ENCODED LATITUDE<br />

39<br />

40<br />

41<br />

42<br />

43<br />

(§C.3.4.5.7)<br />

44 LSB<br />

45<br />

46<br />

47<br />

48<br />

49<br />

MSB<br />

50 CPR ENCODED LONGITUDE<br />

51<br />

52<br />

53<br />

54<br />

55<br />

(§C.3.4.5.7)<br />

56 LSB<br />

Draft<br />

DRAFT - Working Paper ASP TSGWP11-01 <strong>for</strong> review by the TSG during the meeting in June 2011 in Paris

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