Safran CORTEX CRT Quantum - Page 13

COMMAND RANGING & TELEMETRY UNIT CORTEX
CRT QUANTUM USER'S MANUAL
Ref. DTU 100042
Is.Rev. 5.17
Date: Dec. 03, 2021Sept.
30, 2021
© Safran Data Systems
This document is the property of Safran Data Systems.
It cannot be duplicated or distributed without expressed written consent.
Page xiii
FIGURE 22: 2ND ORDER PLL TRACKING CAPACITY ............................................................................................................ 46
FIGURE 23: 3RD ORDER PLL TRACKING CAPACITY ............................................................................................................. 47
FIGURE 24: POST DETECTION DIVERSITY COMBINING : FUNCTIONAL BLOCK DIAGRAM ................................................ 53
FIGURE 25: PRE DETECTION DIVERSITY COMBINING : FUNCTIONAL BLOCK DIAGRAM ....................................................... 54
FIGURE 26 : POST DETECTION DIVERSITY COMBINING OUTPUTS .................................................................................... 55
FIGURE 27: PRE DETECTION DIVERSITY COMBINING OUTPUTS .......................................................................................... 56
FIGURE 28: PROBABILITY OF BIT ERROR VERSUS EB/NO. .................................................................................................. 62
FIGURE 29: PROBABILITY OF BIT ERROR VERSUS EB/NO. REF : CCSDS 413.0-G-2 (§ B2.3), OCTOBER 2009 .................. 63
FIGURE 30: CRT PERFORMANCE VERSUS CCSDS SIMULATIONS ....................................................................................... 64
FIGURE 31: PROBABILITY OF BIT ERROR VERSUS EB/NO. .................................................................................................. 71
FIGURE 32: PROBABILITY OF BIT ERROR VERSUS EB/NO ................................................................................................... 72
FIGURE 33: CRT LDPC BER PERFORMANCE COMPARED TO CCSDS (R=1/2, K=4096) ..................................................... 74
FIGURE 34: CCSDS BER PERFORMANCE FOR ALL RATES .................................................................................................. 75
FIGURE 35: TM CHAIN : I/O PORTS (LBW) ........................................................................................................................ 76
FIGURE 36: TM CHAIN : I/O PORTS (HBW WITH SUB-CARRIER) ........................................................................................ 78
FIGURE 37: M CHAIN : I/O PORTS (HBW DIRECT PCM) .................................................................................................... 81
FIGURE 38: TM CHAIN : I/O PORTS (HBW DIRECT PCM WITH SINGLE VITERBI) ............................................................. 83
FIGURE 39: TM CHAIN : I/O PORTS (HBW DIRECT PCM WITH DUAL VITERBI) ................................................................ 86
FIGURE 40: TM CHAIN : I/O PORTS (HBW DIRECT PCM, DIFFERENTIAL CODING) ......................................................... 89
FIGURE 41: TM CHAIN : I/O PORTS (HBW DIRECT PCM WITH DUAL VITERBI& DIFFERENTIAL DECODING) .................. 92
FIGURE 42: TM CHAIN : I/O PORTS (HBW DIRECT PCM AQPSK DECODING) ................................................................. 94
FIGURE 43: FRAME SYNCHRONIZATION PROCESS .............................................................................................................. 96
FIGURE 44: SPECTRUM OF THE TEST SIGNAL .................................................................................................................. 104
FIGURE 45: CONSTELLATION OF THE RECEIVED SIGNAL WITHOUT DEAF ................................................................... 105
FIGURE 46: CONSTELLATION OF THE RECEIVED SIGNAL WITH DEAF ACTIVATED ...................................................... 106
FIGURE 47: CCSDS DESCRAMBLING ................................................................................................................................. 107
FIGURE 48: LOW BANDWIDTH UPLINK SCENARIO ............................................................................................................ 112
FIGURE 49: HIGH BANDWIDTH UPLINK SCENARIO WITH PCM INPUT SIGNAL (PM, FM) .............................................. 113
FIGURE 50: HIGH BANDWIDTH UPLINK SCENARIO WITH PCM AND VIDEO INPUT SIGNALS (PM, FM) .......................... 114
FIGURE 51: HIGH BANDWIDTH UPLINK SCENARIO (BPSK) ............................................................................................. 115
FIGURE 52: HIGH BANDWIDTH UPLINK SCENARIO ( QPSK, OQPSK WITHOUT CONVOLUTIONAL ENCODING) .............. 116
FIGURE 53: HIGH BANDWIDTH UPLINK SCENARIO (QPSK, OQPSK WITH SINGLE CONVOLUTIONAL ENCODING) .......... 117
FIGURE 54: HIGH BANDWIDTH UPLINK SCENARIO (QPSK, OQPSK WITH DUAL ENCODING) ......................................... 117
FIGURE 55: HIGH BANDWIDTH UPLINK SCENARIO (QPSK, OQPSK WITH DIFFERENTIAL ENCODING) ......................... 117
FIGURE 56: HIGH BANDWIDTH UPLINK SCENARIO (QPSK, OQPSK WITH DUAL AND DIFFERENTIAL ENCODING) ........ 118
FIGURE 57: HIGH BANDWIDTH UPLINK SCENARIO (AQPSK) .......................................................................................... 119
FIGURE 58: IFM OUTPUT STAGE ARCHITECTURE ............................................................................................................ 120
FIGURE 59: TMS FILE STRUCTURE FOR REED-SOLOMON ENCODING ........................................................................... 124
FIGURE 60: TMS FILE STRUCTURE FOR TURBO ENCODING ........................................................................................... 125
FIGURE 61: TMS FILE STRUCTURE FOR LDPC ENCODING ............................................................................................ 127
FIGURE 62: "125 KHZ" FILTER, -3 DB BANDWIDTH: 1.36 MHZ ..................................................................................... 128
FIGURE 63: "250 KHZ" FILTER, -3 DB BANDWIDTH: 2.06 MHZ ..................................................................................... 129
FIGURE 64: "500 KHZ" FILTER, -3 DB BANDWIDTH: 2.4 MHZ ....................................................................................... 129
FIGURE 65: "1 MHZ" FILTER, -3 DB BANDWIDTH: 3.66 MHZ ........................................................................................ 130
FIGURE 66: "2 MHZ" FILTER, -3 DB BANDWIDTH: 5.5 MHZ .......................................................................................... 130
FIGURE 67: "4 MHZ" FILTER, -3 DB BANDWIDTH: 8.46 MHZ ........................................................................................ 131
FIGURE 68: TELECOMMAND TIMING ................................................................................................................................. 136
FIGURE 69: SWEEPING WAVEFORM ................................................................................................................................... 138
FIGURE 70: PROCESSING OF THE IFM CONFIGURATION COMMANDS ........................................................................... 139
FIGURE 71: SATELLITE TELECOMMANDING PROTOCOL WITH CLCW CHECK & CARRIER SWEEPING ............................. 140
FIGURE 72: CONFIGURING THE SWEEPING MODE ON THE IFM ....................................................................................... 141
FIGURE 73: RANGING SEQUENCE FLOW CHART ............................................................................................................... 151
FIGURE 74: DOPPLER RATE AID ARCHITECTURE ............................................................................................................. 161
FIGURE 75: DOPPLER AID ARCHITECTURE ....................................................................................................................... 163
FIGURE 76: RANGING SEQUENCE (ESA STANDARD) ......................................................................................................... 174
FIGURE 77: RANGING SEQUENCE (USB STANDARD) ........................................................................................................ 176
FIGURE 78: RANGING SEQUENCE (INMARSAT/LMCO STANDARDS) ............................................................................. 180
FIGURE 79: RANGING SEQUENCE (ESA CODE STANDARD WITH N = 7) ............................................................................ 183
FIGURE 80: RANGING SEQUENCE (PN CODES STANDARD) ............................................................................................... 188