Galileo OS SIS ICD.indd - GSA - Europa

T 0 (s)
4.3.5. I/NAV Word Types
Table 42. I/NAV Sub-Frame Sequencing
The content of the I/NAV word types is stated in the following tables (see Chapter 5 for
a description of the I/NAV word types contents).
Word Type 1: Ephemeris (1/4)
Type=1
IOD nav
t 0e
Ephemeris (1/4)
38 © European Union 2010
Document subject to terms of use and disclaimers p. ii-iii
OD SIS ICD, Issue 1, February 2010
M 0
e
A 1/2
Reserved
Total
(bits)
6 10 14 32 32 32 2 128
Word Type 2: Ephemeris (2/4)
Type=2
IOD nav
Subframe
ID
480 17
510 18
540 19
570 20
600 21
630 22
660 23
690 24
Ω 0
E5b E1B
Word 7: Almanac SV 25 (1/2) Word 7: Almanac SV 7 (1/2)
Word 8: Almanac SV 25 (2/2) + Word 8: Almanac SV 7 (2/2) +
almanac SV 26 (1/2)
almanac SV 8 (1/2)
Word 9: Almanac SV 26 (2/2) + Word 9: Almanac SV 8 (2/2) +
almanac SV 27 (1/2)
almanac SV 9 (1/2)
Word 10: Almanac SV 27 (2/2) Word 10: Almanac SV 9 (2/2)
Word 7: Almanac SV 28 (1/2) Word 7: Almanac SV 10 (1/2)
Word 8: Almanac SV 28 (2/2) + Word 8: Almanac SV 10 (2/2) +
almanac SV 29 (1/2)
almanac SV 11 (1/2)
Word 9: Almanac SV 29 (2/2) + Word 9: Almanac SV 11 (2/2) +
almanac SV 30 (1/2)
almanac SV 12 (1/2)
Word 10: Almanac SV 30 (2/2) Word 10: Almanac SV 12 (2/2)
Word 7: Almanac SV 31 (1/2) Word 7: Almanac SV 13 (1/2)
Word 8: Almanac SV 31 (2/2) + Word 8: Almanac SV 13 (2/2) +
almanac SV 32 (1/2)
almanac SV 14 (1/2)
Word 9: Almanac SV 32 (2/2) + Word 9: Almanac SV 14 (2/2) +
almanac SV 33 (1/2)
almanac SV 15 (1/2)
Word 10: Almanac SV 33 (2/2) Word 10: Almanac SV 15 (2/2)
Word 7: Almanac SV 34 (1/2) Word 7: Almanac SV 16 (1/2)
Word 8: Almanac SV 34 (2/2) + Word 8: Almanac SV 16 (2/2) +
almanac SV 35 (1/2)
almanac SV 17 (1/2)
Word 9: Almanac SV 35 (2/2) + Word 9: Almanac SV 17 (2/2) +
almanac SV 36 (1/2)
almanac SV 18 (1/2)
Word 10: Almanac SV 36 (2/2) Word 10: Almanac SV 18 (2/2)
Table 43. Bits Allocation for I/NAV Word Type 1
i 0
Ephemeris (2/4)
ω
i
Reserved
Total
(bits)
6 10 32 32 32 14 2 128
Table 44. Bits Allocation for I/NAV Word Type 2
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