These definitions are meant to be used by the reader

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Unformatted text preview: itions are meant to be used by the reader as an aid to understanding the concept of Telecommand; no attempt is being made to universally define these terms. Definitions which may be found in a standard English dictionary have been omitted. ACQUISITION SEQUENCE: A specific high transition density bit pattern transmitted to permit the receiving end to acquire symbol synchronization. BIT TRANSITION GENERATOR: A generator that produces a specific random sequence of 255 bits to be ORed with the input TC data bits to increase the frequency of bit transitions (between “1” and “0”). No additional bits are added by this process. CARRIER MODULATION MODE: The data type being used to modulate the RF carrier or subcarrier. CLEAN DATA BITS: TC data bits which have been decoded and are outputted from the Coding layer. CODEBLOCK: A fixed-length data entity containing information and check bits that have been structured by an encoding algorithm. CCSDS 201.0-B-3 Page A-2 June 2000 CCSDS RECOMMENDATION FOR TELECOMMAND: CHANNEL SERVICE CODING LAYER: That layer of the TC Channel Service which uses a prescribed coding technique to reliably transfer information bits through the potentially noisy Physical layer. COMM...
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