3.3.6.4.
Reed-Solomon Decoding ........................................................................................................................................... 69
3.3.6.5.
Turbo Decoding ......................................................................................................................................................... 70
3.3.6.6.
Probability of Bit Error .............................................................................................................................................. 72
3.3.6.7.
LDPC Decoding ......................................................................................................................................................... 73
3.3.7.
3.3.7.1.
Low Bandwidth TMU ................................................................................................................................................ 76
3.3.7.2.
3.3.7.3.
3.3.7.4.
3.3.7.5.
3.3.7.6.
3.3.7.7.
3.3.7.8.
3.3.8.
Frame Synchronization ................................................................................................................................ 95
3.3.8.1.
Frame Synchronization Strategy ................................................................................................................................ 95
3.3.8.2.
PSK Ambiguity Solving ............................................................................................................................................ 96
3.3.8.3.
3.3.8.4.
AFL: Anti False Lock ................................................................................................................................................ 97
3.3.9.
Frame Verification....................................................................................................................................... 98
3.3.10.
Telemetry Frames or Raw Data ................................................................................................................... 98
3.3.11.
Telemetry Data Time-Tagging ..................................................................................................................... 98
3.3.12.
3.3.12.1. Telemetry Request ..................................................................................................................................................... 99
3.3.12.2. Telemetry Buffers ...................................................................................................................................................... 99
3.3.12.3. Telemetry Data Flows .............................................................................................................................................. 100
3.3.12.3.2. Permanent Flow .................................................................................................................................................. 100
3.3.13.
Telemetry Data Decommutation ................................................................................................................ 100
3.3.14.
3.3.15.
Blind Equalization ..................................................................................................................................... 103
3.3.15.1. General ..................................................................................................................................................................... 103
3.3.15.2. DEAF ....................................................................................................................................................................... 104
3.3.16.
3.3.16.1. General ..................................................................................................................................................................... 107
3.3.16.2. CCSDS Descrambling ............................................................................................................................................. 107
3.3.16.4. Continuous Descrambling ........................................................................................................................................ 108
3.3.17.
3.3.17.1. Prerequisites ............................................................................................................................................................. 109
3.3.17.3. Registry Configuration ............................................................................................................................................. 110
3.3.17.4. TCP/IP Interface ...................................................................................................................................................... 110
3.4.
3.4.1.
Uplink Resources ....................................................................................................................................... 111
3.4.1.1.
Low Bandwidth Scenario ......................................................................................................................................... 112
3.4.1.2.
High Bandwidth Scenario ........................................................................................................................................ 113
3.4.1.2.1. PM and FM Modulation ..................................................................................................................................... 113
3.4.1.2.1.1.
Single PCM Input Signal .................................................................................................................. 113
3.4.1.2.1.2.
Video + PCM Input Signals ............................................................................................................. 114
3.4.1.2.2. BPSK Modulation .............................................................................................................................................. 115
3.4.1.2.3.1.
3.4.1.2.3.2.
3.4.1.2.3.3.
3.4.1.2.3.4.
With Differential Encoding .............................................................................................................. 117
© Safran Data Systems
COMMAND RANGING & TELEMETRY UNIT CORTEX
CRT QUANTUM USER'S MANUAL
................................................................................................ 111
This document is the property of
It cannot be duplicated or distributed without expressed written consent.
Safran Data Systems
.
Ref.
DTU 100042
Is.Rev.
5.17
Date:
Dec. 03, 2021Sept.
30, 2021
Page vii