Telemetry Demodulation; Telemetry Processing - Safran CORTEX Series User Manual

1.3.3

Telemetry Demodulation

 Input frequency:

720 MHz nominal, tunable between 530 and 910 MHz

1.2 GHz nominal, tunable between 910 MHz and 1490 MHz

2.4 GHz nominal, tunable between 1,65 GHz and 3.15 GHz

1.25 GHz nominal, tunable between 500 MHz and 2400 MHz
 Automatic carrier acquisition
 BPSK, QPSK, OQPSK (SQPSK), UQPSK (AQPSK, AUQPSK, AUSQPSK), 8PSK, GMSK,
SOQPSK, 16QAM, 16APSK, 32APSK, 64APSK 128 APSK 256APSK demodulation
 Equalization filter: static or auto-adaptive (DEAF)
 Automatic compensation for cross-polarization perturbations(XDEAF)
 Adjacent channel rejection filters
 Bit synchronization
 Fully digital matched and shaped filters: Raised Cosine, Root Raised Cosine, GMSK, SOQPSK
shaping filter (CCSDS and IRIG standard), User defined
 Viterbi decoding: single or dual mode, ½ (+ puncture) or ¼ rate, single or parallel processing
(stacked Viterbi)
 De-scrambler: CCITT V.35 and Intelsat V.35
 4D-TCM (Trellis Coded Modulation) decoding
 DVB-S2, DVBS2X, SCCC and SCCC-X standards supported
 Multiple Demodulation capability up to 8
1.3.4

Telemetry Processing

Multi-channel architecture (up to 8 parallel channels – Multi DPU processing)


Transport Layer for RS DVB or LDPC decoders (Asynchronous decoding layer)

CADU Frame synchronization (CCSDS Transfer layer)

Data time-tagging (internal, external IRIG B signal or external NTP server)

De-randomization, De-interleaving, Virtual filling, Reed-Solomon decoding (supported standard:
CCSDS, DVB-S, ECSS)

CRC frame checking

CCSDS Low Density Parity Check decoding (LDPC 7/8, AR4JA ½ 2/3 4/5 )
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HDR-4G+ USER'S MANUAL
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Ref. DTU 100782
Is.Rev 3.5
Date: June 1, 2021
Safran Data Systems
.
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