[SLS-CC] Relevance of Annex C in CCSDS 700.0-G-3 (AOS GB)

Kazz, Greg (US 312B) greg.j.kazz at jpl.nasa.gov
Tue May 7 22:33:56 UTC 2024


Hi Andrea & Ken,

Looking over the current AOS GB (1993), there is an Annex C entitled: “Procedures for Verifying CCSDS Encoder Implementations” consisting of:

  1.  CVCDU R-S outer code, the VCDU Header Error Control code, and the Cyclic Redundancy Code (CRC) polynomial used to generate the VCDU Error Control field.
  2.  A Reed-Solomon outer code is used to generate check symbols that are appended to a VCDU to form a CVCDU….followed by test vectors that one could use to verify these codes in their implementations.

Question – Similar to the tack the SLP WG is taking in reviewing the TC GB (CCSDS 200-G-6), vintage 1987, would it make more sense to extract Annex C from the AOS GB and place that information into the TM Sync & CC Green Book ?

So far, it appears to me that most if not the remainder of the AOS GB is out of date and not very useful to maintain as a green book anymore.

Best regards,
Greg
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