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A lag of CCSDS recommendation is shown. Main part of onboard equipment-Tracking, Telemetry and Command Subsystem is shown as source for potential improvements for new standards. It is possible by increasing of estimation accuracy of the parameters of the orbit of spacecraft.

The concept of “multiplier” in Galois fields, which are widely used in cryptography and noiseresistant coding, is considered. The architecture of a parallel multiplier for the Galois fields is analyzed. Reconfigurable multiplier is constructed. It is shown that the use of this type of multiplier will significantly reduce the number of logic gates

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