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1.6.1.4.3. Frame Synchronization. Telemetry Storage
Frame synchronization
Frame filtering
CCSDS decoding transfer frame level:
Turbo decoding
LDPC Decoding
CCSDS decommutation
Telemetry storage on hard disk
Telemetry replay
Off-line telemetry transmission
© Safran Data Systems
COMMAND RANGING & TELEMETRY UNIT CORTEX
CRT QUANTUM USER'S MANUAL
Synchronization word size
Frame size:
Synchronization strategy
Synchronization word on I or Q Yes
64-bit frame mask
Convolutional Viterbi
Soft decision
Bit error rate monitoring : Yes
Lock detector
Reed-Solomon
Turbo
Scrambling
Interleave factor
Rates
Output
Block length
Rates
Output
Block length
CADU & VCDU
Time-tagged frames or blocks
Yes (TM data re-modulation by the TMS in Replay mode)
Yes (direct transfer to the LAN of stored telemetry)
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It cannot be duplicated or distributed without expressed written consent.
Ref.
Is.Rev.
Date:
30, 2021
8 to 32 bits
64, 96, 128, 192 for Turbo decoding
64 bits for LDPC 1/2, 2/3, 4/5
32 bits for LDPC 7/8
10 to 32,000 bytes
SYN (0 to 7 errors,
up to 64 errors for Turbo-decoding,
up to 64 errors for LDPC)
CTL (0 to 7 errors)
LTS (0 to 7 frames)
Bit slippage (0, 1 or 2 bits)
: Yes
: Yes
: Yes
: Yes
: Yes (CCSDS 131.0-B-3).
: Yes
: Automatically programmed
1/2, 1/3, 1/4 and 1/6
up to 5 Mb/s
1784, 3568, 7136 and 8920 bits
1/2, 2/3, 4/5, 7/8
up to 10 Mb/s
1024, 4096, 16384 bits for 1/2, 2/3, 4/5
7136 bits for 7/8
: Yes
DTU 100042
5.17
Dec. 03, 2021Sept.
Page 25
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