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nless
nds
x (t (t ) ±2 4
x􀀅 y􀀅 b)
(tb), (tb), (tb) 2 ±6 cond2
1 i nless
4 1 dimens
5 1 0 to 23 hours
tk 6 1 0 to 59 minutes
1 30 0 or 30 seconds
tb 7 15 ...1 42 minutes
γn(tb) 11 2–40 ±2–30 dimensio
τn(tb) 22 2–30 ±2–9 seco
n b), yn b), zn(tb 27 2–11 .7 × 10 km
n (tb), n (tb), z􀀅 n (t 24 2–20 ±4.3 km/second
􀀅x􀀅n 􀀅y􀀅n 􀀅z􀀅n 5 –30 .2 × 10–9 km/se
En 5 1 0 to 31 days
Bn 3 0 to 7 dimens o
P1 2 as detailed in 3.2.1.3.1
P2 1 1 0; 1 dimensionless
P3 1 1 0; 1 dimensionless
Δτn 5 2–30 ±13.97 × 10–9 seconds
Table B-18. Arrangements of the ephem is and time parameters within the frame
Para eter of bits within the frame within the frame
er
m
Number String number Bit number
m 4 1..
z
x􀀅
b)
77 8
P3 1 3 80
.15 81 – 84
tk 12 1 65 – 76
tb 7 2 70 – 76
γn(tb) 11 3 69 – 79
τn(tb) 22 4 59 – 80
xn(tb) 27 1 9 – 35
yn(tb) 27 2 9 – 35
n(tb) 27 3 9 – 35
n (tb) 24 1 41 – 64
y􀀅 n (tb) 24 2 41 – 64
z􀀅n (tb) 24 3 41 – 64
n
(t
x􀀅􀀅 (tb) 5 1 36 – 40
n
(t
y􀀅􀀅 b) 5 2 36 – 40
􀀅z􀀅n 5 3 36 – 40
En 5 4 49 – 53
Bn 3 2 78 – 80
P1 2 1 – 7
P2 1 2 77
Δτn 5 4 54 – 58
APP B-23 23/11/06
Annex 10 — Aeronautical Communications Volume I
ΔiA = the correction to the mean value of inclination of nA-satellite at instant of tλ
A
n (mean value of inclination is equal
TA = the correction to the mean value of Draconian period of the nA-satellite at the instant of tλ
A
n (mean value of
n llite;
A
n = a generalized “unhealthy flag” of n -satellite at instant of almanac upload almanac of orbits and phases. When
almanac parameters shall be
ositive or negative. The MSB shall be the sign bit, the chip “0” shall correspond to the “+” sign, and the chip “1” shall
3.2.1.3.6 Arrangement of the almanac parameters. Arrangement of the almanac words within the frame shall be as
dicated in Table B-21.
.2.1
3.2.1.4.1 Letter designation of additional data. In addition to the GLONASS data, GLONASS-M satellites shall
— an index of the satellite transmitting the given navigation signal: it corresponds to a slot number within GLONASS
— health flag for n-th satellite: “0” indicates the n-th satellite is healthy, “1” indicates the malfunction of the n-th
1 — coefficient to determine ΔUT1: it is equal to the difference between UT1 and UTC at the beginning of the day (NA),
2 — coefficient to determine ΔUT1: it is equal to the daily change of the difference ΔUT1 (expressed in seconds for a
These coefficients shall be used to transform betw
ΔUT1= UTC(SU) – UT1,
he
f Pole motion),
UTC(SU) — Coordinated Universal Time Standard,
KP — notification of a forthcoming leap second correction of UTC (±1 s) as shown:
n
to 63 degrees);
Δ n
Draconian period T is equal to 43 200 seconds);
ΔT􀀅 A = the rate of change of Draconian period of nA-sate
εA
n = the eccentricity of nA-satellite at instant of tλ
A
n;
ωA
n = the argument of perigee of nA-satellite at the instant of tλ
A
n;
τA
n = the coarse value of nA-satellite time correction to GLONASS time at instant of tλA
n;
C A
C = 0, this indicates that n-satellite is non-operational. When C = 1, this indicates that n-satellite is operational.
3.2.1.3.5 Partition and coding of almanac parameters. The GLONASS almanac, transmitted within the superframe,
shall be partitioned over the superframe, as indicated in Table B-19. The numeric values of
n n
p
correspond to the “–” sign. The almanac parameters shall be coded as indicated in Table B-20.
in
3 .4 CONTENT AND STRUCTURE OF ADDITIONAL DATA TRANSMITTED BY GLONASS-M SATELLITES
transmit the following additional data as indicated in Table B-17-A:
n
constellation;
ln
satellite;
B
expressed in seconds;
B
mean sun day).
een UTC(SU) and UT1:
w re
UT1 — Universal Time referenced to the Mean Greenwich Meridian (taking account o
　
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