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Note.— Bit coding is indicated with the lower bit number on the left.
23/11/06 ATT G-50
Attachment G Annex 10 — Aeronautical Communications
Table G-8. Example MLS/RNAV departure way-point assignments
Procedure
name
Data
word
Bit
numbers Data item Value Coding
WP
Index
LAWSO B37 I21-35 WP 3 – X coordinate –8 018 m 001111000011001 1
I36 Y coordinate follows Yes 1
I37-51 WP 3 – Y coordinate 3 057 m 010101010010000
I52 Z coordinate follows No 0
I53-55 Next segment/field identifier curved = 1 100
I56-69 WP 2 – X coordinate (first 14 bits) –4 964 m 11001001111000 2
B38 I21 WP 2 – X coordinate (last bit) 1
I22 Y coordinate follows No 0
I23 Z coordinate follows No 0
I24-26 Next segment/field identifier straight = 0 000
I27-41 WP 1 – X coordinate 0 000000000000000 3
I42 Y coordinate follows No 0
I43 Z coordinate follows No 0
I44-46 Next segment/field identifier Last WP = 6 011
I47-69 Spare zeros 000...000
Note.— Bit coding is indicated with the lower bit number on the left.
ATT G-51 23/11/06
Annex 10 — Aeronautical Communications Volume I
Table G-9. Example of complete MLS/RNAV database
Bit position
1 2 3 4 5 6 7
Word 3456 7890 1234 5678 9012 3456 7890 1234 5678 9012 3456 7890 1234 5678 9012 3456
A1 0000 0111 0011 0010 0101 1101 1001 1000 0010 0110 0010 0100 0000 0000 0000 0100
A2 0000 1010 0011 0010 0111 0000 0010 0111 1001 1000 0000 0000 0110 0000 0001 1010
A3 0000 1101 0011 0010 0001 0111 0110 0110 0011 0000 0100 0110 0111 0000 0111 1101
A4 0001 0011 0011 0010 0111 0000 0010 0000 0000 0000 0001 0000 0000 0000 0110 1000
B1 0000 0111 1100 0010 1100 0111 0100 0011 1111 0000 0001 1001 0001 0000 0010 0111
B2 0000 1010 1101 0100 0011 0011 0100 0011 0100 0100 0011 1010 1001 0000 0111 1001
B3 0000 1101 0111 0101 0000 1101 1001 1111 0100 0010 0011 1010 1000 0100 0000 1101
B4 0001 0011 1100 1101 0010 1101 1110 0100 1100 0110 0001 0110 0001 0100 0011 1110
B5 0001 0100 1100 0001 0011 0001 0000 0111 1011 0010 0000 0001 1001 1110 0000 0001
B6 0001 1001 0100 1001 0000 0100 1110 0111 1011 0001 0010 0000 0001 0100 0011 0000
B7 0001 1110 0100 1111 0110 0001 0101 0001 1110 0010 1110 1101 1100 0111 0110 1001
B8 0010 0010 1011 1100 1000 1111 0100 1110 0011 0110 0001 1111 1100 0010 0000 0011
B9 0010 0101 0110 1100 0000 0100 1101 1111 0110 0000 0001 1111 0000 0000 0101 0110
B10 0010 1000 1010 1010 1110 0001 1001 0111 0000 0001 1011 1100 1110 0101 1110 0100
B11 0010 1111 0100 1000 0000 0000 0000 0000 0000 1100 0000 0000 0000 0000 0110 0100
B36 1001 0001 0011 0100 0011 1011 1001 1111 0011 0001 0011 1010 1011 0000 0010 0101
B37 1001 0110 0011 1100 0011 0011 0101 0101 0010 0000 1001 1001 0011 1100 0100 0000
B38 1001 1011 1000 0000 0000 0000 0000 0000 1100 0000 0000 0000 0000 0000 0001 1101
B39 1001 1100 1000 1001 0010 1011 0010 0001 1000 1011 1111 0010 0000 0000 1010 1001
B40 1010 0000 0111 0011 0110 0110 0110 1000 0101 0110 0101 0010 0010 1010 0110 1001
B41 1010 0111 1100 0000 0000 0110 1101 1001 0111 0000 0000 0000 0000 0000 0001 1111
B44 1011 0011 1110 1010 0101 1000 0100 1010 0000 1110 1110 1000 1000 0000 0001 1011
B45 1011 0100 1111 1001 0000 0000 0000 1101 0010 0100 0000 0000 0010 1111 0000 0011
BDW6 0011 0011 1000 1000 0011
Note.— Preamble bits I1 to I12 are not shown.
23/11/06 ATT G-52
Attachment G Annex 10 — Aeronautical Communications
Table G-10. Error allocations for MLS azimuth critical and
sensitive area development
(distances are in metres (feet); error values are in degrees)
Azimuth to threshold distance
metres (feet)
1 830
(6 000)
2 140
(7 000)
2 440
(8 000)
2 750
(9 000)
3 050
(10 000)
3 360
(11 000)
3 660
(12 000)
3 960
(13 000)
Antenna beamwidth 2° 2° 2° 2° 2° 1° 1° 1°
a) System budget for PFN =
3.5 m (11.5 ft)
0.1098 0.0941 0.0824 0.0732 0.0659 0.0599 0.0549 0.0507
b) Ground equipment error
allowance
0.0120 0.0120 0.0120 0.0120 0.0120 0.0120 0.0120 0.0120
c) Ground reflection allowance 0.0400 0.0400 0.0400 0.0400 0.0400 0.0200 0.0200 0.0200
d) Clean site error allocation
⎡⎢⎣d= a2−b2−c2⎤⎥⎦
0.1016 0.0844 0.0710 0.0601 0.0510 0.0552 0.0497 0.0450
e) ALS/monitor pole allowance 0.0300 0.0300 0.0300 0.0300 0.0300 0.0150 0.0150 0.0150
f) Complex site error allocation
⎡⎢⎣f = d2−e2⎤⎥⎦
0.0970 0.0788 0.0643 0.0521 0.0412 0.0531 0.0474 0.0424
g) 70 per cent complex site error
allocation
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