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3.6.9.2. Number of Tones and Transmission Rank
The number of minor tones is programmable from 1 to 6 for the ESA-like standard and 1 to 8 for the USB
standard. The minor tones transmission rank is also fully programmable.
3.6.9.3. Real and Virtual Minor Tone Frequency
The virtual minor tone frequency is (in kHz): ��
The real minor tone frequency is (in kHz): ��
3.6.9.4. Ambiguity Distance
3.6.9.4.1. Integer Ratio Between Q Factors
If the ratio between two adjacent minor tone « Q » factors is an integer value, the one-way ambiguity distance is
half the wavelength of the lowest virtual minor tone.
Example 1: ESA-like mode with all real tones in the range 22-28 kHz:
T
ONE RANK
(1 =
)
FIRST
7
6
5
4
3
2
1
The one-way ambiguity distance is approximately:
Example 2: USB mode with a 500 kHz major tone and a very low minor tone frequency (0.625 Hz) for an
extended ambiguity distance:
T
ONE RANK
(1 =
)
FIRST
9
8
7
6
5
4
3
2
© Safran Data Systems
COMMAND RANGING & TELEMETRY UNIT CORTEX
CRT QUANTUM USER'S MANUAL
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Q
18
90
450
21
2 250
101
11 250
501
56 250
2 501
281 250
12 501
Q
5
5
25
125
625
3 125
26
12 500
101
50 000
401
This document is the property of
It cannot be duplicated or distributed without expressed written consent.
500
=
��
����������_��������
= ��
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P
V
T
IRTUAL
(
)
HZ
1
27 777.78
4
5 555.56
1 111.11
222.22
44.44
8.89
1.78
300 000
= 84 270 ����
1.78×2
P
V
T
IRTUAL
(
)
HZ
5
500 000
1
100 000
1
20 000
1
4 000
6
800
160
40
10
Safran Data Systems
.
Ref.
DTU 100042
Is.Rev.
5.17
Date:
Dec.
03, 2021Sept. 30, 2021
× ��
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R
T
(
ONE
EAL
ONE
27 777.78
22 222.22
23 333.33
22 444.44
22 266.67
22 231.11
22 224.00
R
T
(
ONE
EAL
ONE
500 000
100 000
20 000
4 000
4 800
4 160
4 040
4 010
)
HZ
)
HZ
Page 177
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