At the sending end it provides the radio frequency

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Unformatted text preview: nding end it provides the radio frequency and modulation techniques required to create and operate the channel. At the receiving end, it provides the reception, demodulation, and symbol synchronization for the channel. CCSDS 201.0-B-3 Page A-4 June 2000 CCSDS RECOMMENDATION FOR TELECOMMAND: CHANNEL SERVICE PHYSICAL LAYER OPERATIONS PROCEDURE: A specific procedure of the Physical layer designed to activate and deactivate the physical telecommand channel by invoking RF carrier and modulation techniques. PROTOCOL: A set of procedures, supported by format conventions, that define the orderly exchange of information between entities within a given layer of the TC System or between layers. PSEUDO-RANDOMIZATION: Pseudo-Randomization, herein called Randomization, is a bandwidth-efficient technique of algorithmically translating the data bits to insure frequent bit transitions in the communications channel. RELIABLE: Meets the quality, quantity, continuity and completeness criteria which are specified by the Telecommand System. START SEQUENCE...
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