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B-73.
N age type structure is defined in 3.6.4.1.
3.6.7 NON-A RAFT ELEMENT
3.6.7.1 PERFORMANCE
3.6.7.
3.6.7.1. S) (1 sigma ound subsys bution to the correct pseudo-range
accuracy fo tes shall be:
2
shorz, j = 2 2
sxj +syj
sx,j 1
.1
is the meter for t
OS
satellite constellation fo
ultip c
md_e_ e_POS,GLO
is as defined in 3.6.5.5.2.1
ESSAGE TABL
GBAS message shal e co essage format es B
ote.— Mess
IRC S
1.1 Accuracy
1.1 The root-mean-square (RM ) of the gr tem contri ed
r GPS and GLONASS satelli
n/ 0 2
0 1 2
pr _ gnd 2
(a a e )
RMS (a )
M
+ −θ θ
≤ +
where
M = the number of GNSS reference s, as indic pe 2 message r (3.6.4.3),
or, when this parameter is coded to indicate “not applicab e value of M is defi ed as 1;
n nth
ranging source;
θn elevation angle for the nth
ranging s ce; and
a0, a1, eters defined in Tables B-74 and B-75 for eac defined ground acc designators
(GADs).
Note 1.— T racy requirement is determined by the GAD letter and the number of
installed referen
Note 2.— T to the corrected pseudo-range error specified by the curves defined in
Tables B-74 and S satellites do not include aircraft noise and aircraft multipath.
receiver ated in the Ty paramete
le”, th n
=
= our
a2, and θ0 = param h of the uracy
he GBAS ground subsystem accu
ce receivers.
he ground subsystem contribution
B-75 and the contribution to the SBA
APP B-103 23/11/06
Annex 10 — Aeronautical Communications Volume I
Table B-70. Type 1 pseudo-range corrections message
Data content Bits used Range of values Resolution
Modified Z-count 14 0 to 1 199.9 s 0.1 s
Additional message flag 2 0 to 3 1
Number of measurements (N) 5 0 to 18 1
Measurement ty 1
Ephemeris decorrelation parameter (P) 8 0 to 1.275 × 10 m/m 5 × 10–6 m/m
s CRC
ailability duration
ent blocks
rce ID 8
8 1
C) 16 ±3 .6 0.01
on (RRC) 16 ± s 0.001 /s
σpr_gnd 8 0 t 0.0
8 0.0
8 0.05
8 0.05
8 0.0
pe 3 0 to 7
–3
Ephemeri
Source av
16
8
—
0 to 2 540 s
—
10 s
For N measurem
anging sou
R 1 to 255 1
Issue of data (IOD)
ion (PR
0 to 255
Pseudo-range correct 27 7 m
ti
m
Range rate correc 32.767 m/
o m
m
5.08 2 m
B1 ±6.35 m 5 m
B2 ±6.35 m
±6.
m
B3 35 m m
B4 ±6.35 m 5 m
70A. Type 101 GR pseudo-range co tions message
Data content Bits used Range of values Resolution
Table B- AS rrec
Modified Z-count 14 0 to 1 199.9 s 0.1 s
Additional message fla 1
Number of measurements (N) 5 0 to 18 1
Measurement 3 0 to 7 1
Ephemeris decorrelation parameter (P) 8 0 to 1.275 × 10–3 m/m –6 m/m
Ephemeris CRC 16 — —
Source availability ration 0 s 0 s
Number of B param rs 0 or 4 —
Spare 7 — —
For N measurement locks
Ranging source ID 8 1 to 255 1
Issue of data (IOD) 8 0 to 255 1
Pseudo-range correction (PRC) 16 ±327.67 m 0.01 m
Range rate corre 0.001 m/s
σpr_gnd 0.2 m
B parameter block (if provided)
B1 8 ±25.4 m
B2 8 ±25.4 m
B3 ±25.4 m
B4 ±25.4 m
g 2 0 to 3
type
5 × 10
du 8 0 to 254 1
ete 1
b
ction (RRC) 16 ±327.67 m/s
8 0 to 50.8 m
0.2 m
0.2 m
8 0.2 m
8 0.2 m
23/11/06 APP B-104
Appendix B Annex 10 — Aeronautical Communications
Table B-71. Type 2 GBAS-related data message
Data content Bits used Range of values Resolution
GBAS reference receivers 2 2 to 4 —
Ground accuracy designator letter 2 — —
Spare 1 — —
GBAS continuity/integrity designator 3 0 to 7 1
re 5 — —
σvert_iono_gradient 8 0 to 25.5 × 10–6 m/m 0.1 × 10–6 m/m
8 16 to 781 3
Scale height 8 0 to 25 500 m 100 m
55 1
Latitude 32 ±90.0° 0.0005 arcsec
Longitude 32 ±180.0° 0.0005 arcsec
GBAS reference point height 24 ±83 886.07 m 0.01 m
8 0 to 48 1
Maximum use distance (Dmax) 8 2 to 510 km 2 km
Kmd_e_POS,GPS 8 0 to 12.75 0.05
Kmd_e,GPS 8 0 to 12.75 0.05
Local magnetic variation 11 ±180° 0.25°
Spa
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