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Not to scale
WIDTH IS AT LEAST EQUAL
TO THE APPROACH AZIMUTH
PROPORTIONAL GUIDANCE
SECTOR
Figure G-10A. Elevation approach region coverage
ATT G-71 23/11/06
Annex 10 — Aeronautical Communications Volume I
245 m
(810 ft)
TYPICAL
120 m
(400 ft)
TYPICAL
APPROACH
ELEVATION
ANTENNA
APPROACH
ELEVATION
ANTENNA
Note. The above represents the minimum proportional guidance sector required, irrespective of equipment — location or orientation.
VERTICAL COVERAGE
7.5°
600 m
(2 000 ft)
2.5 m
(8 ft)
75 m
(250 ft)
75 m
(250 ft)
HORIZONTAL
37 km (20 NM)
LATERAL COVERAGE
± 10° (Minimum) APPROACH
DIRECTION
MLS
DATUM POINT
MLS
DATUM POINT
Not to scale
Figure G-10B. Elevation minimum operational coverage
23/11/06 ATT G-72
Attachment G Annex 10 — Aeronautical Communications
RECEIVER OUTPUT FILTER (LOW PASS)
PATH FOLLOWING FILTER (LOW PASS)
CONTROL MOTION NOISE FILTER (HIGH PASS)
RADIANS/SEC
6dB/OCT
12dB/OCT
6dB/OCT
ω1
ω1
ω0
ω0
ω2
ω2
ω2
0.5 0.3 10
1.5 0.5 10
1.5 0.5 10
Corner frequencies
Guidance (Radians/sec)
function
Approach
azimuth
Approach
elevation
DME//P
Receiver
output
filter
Path
following
filter
Control
motion noise
filter S + ω1
S S = jω
S2 + 2ζωn S + ωn2
ωn2
S + ω2
ζ = 1
ω0 = 0.64 ωn
A
B
Path
following
error
Path
following
error filter ω0
Control
motion
noise
Control
motion noise
filter ω1
+-
Receiver
output
filter ω2
MLS
Receiver
Raw angle
estimates
Absolute
position
reference
Figure G-11. Filter configurations and corner frequencies
ATT G-73 23/11/06
Annex 10 — Aeronautical Communications Volume I
ERROR
TIME
OUTPUT OF PFE OR
CMN FILTER
T1 T2 T4
T3
T = SLIDING WINDOW
Notes:
= Error specification
T = Region to be evaluated
T T T = Time intervals that error exceeds specifications.
For the ground equipment to be acceptable in this region,
the following inequality should be true:
0
þ
1 2 3
(T + T + T + )
T
1 2 3 þ # 0.05
0
Figure G-12. MLS measurement methodology
23/11/06 ATT G-74
Attachment G Annex 10 — Aeronautical Communications
+Z
+X
MLS datum point
Threshold of the primary runway
+Y
Figure G-13. MLS/RNAV way-point coordinate system
ATT G-75 23/11/06
Annex 10 — Aeronautical Communications Volume I
WP5
WP4
WP3
WP2
WP1
Figure G-14. Definition of curved segments
23/11/06 ATT G-76
Attachment G Annex 10 — Aeronautical Communications
WP3
WP3
WP2
WP4
WP2
WP1 WP1
KASEL-1-A
SEMOR-1-C
Missed approach
LAWSO-6-D
WP3
WP2
WP1 WP1
WP2
Runway
Runway 23L
23R
Runway
26
NELSO-1-B
Figure G-15. Diagram of sample MLS/RNAV procedures
ATT G-77 23/11/06
Annex 10 — Aeronautical Communications Volume I
Beam centre
0dB
-3dB
-10dB
0.5
BW
0.5
BW
0.76
BW
0.76
BW
0.96
BW
0.96
BW
BW = Beamwidth
Note.— The beam envelope is smoothed by a 26 kHz video filter before measurement.
Figure G-16. Far field dynamic signal-in-space
23/11/06 ATT G-78
Attachment G Annex 10 — Aeronautical Communications
Signal in space
considerations
Is collocation with
ILS glide path
antenna required?
Section 4.1.1.2
Siting elevation antenna
between the glide path
antenna and runway
Section 4.1.1.3
Siting elevation antenna
at a greater offset than
the glide path antenna
Section 4.1.1.4
Alternatives
Determine elevation
antenna setback
4.1.1.2.1-4.1.1.2.3
Determine Fresnel zone
migration region
4.1.1.2.4
Are obstacle
requirements satisfied?
4.1.1.2.5
Are obstacle
requirements satisfied?
4.1.1.3.3
Is lateral pattern
penetration acceptable?
4.1.1.3.2
Adjust elevation
　
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