Safran CORTEX CRT Quantum - Page 271

COMMAND RANGING & TELEMETRY UNIT CORTEX
CRT QUANTUM USER'S MANUAL
Ref. DTU 100042
Is.Rev. 5.17
Date: Dec.
03, 2021Sept. 30, 2021
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Page 191
Example:
 Chiprate: 1023000 chips/s
 Q code length: 256 * 1023 chips
MINOR TONE
RANK
(1 = FIRST)
REAL TONE
FREQUENCY
(KHZ)
RATIO = FREAL
TONE / FEPOCH
MAJOR
TONE
Always
10637
2723
MINOR TONE
1
9832
2517
2
8215
2103
3
8207
2101
4
8230
2107
5
3996
1023
6
4012
1027
Table 30: Hybrid Ranging Tone Standard. Tone programming exemple
Actually, these ratios are imposed by the satellite itself.
However, for synchronization on the beginning of the sequence, the first minor tone should be the most distant of
the others in terms of frequencies since synchronization is based on its detection.