Brief description of the decoy of a system for intercepting and scrambling by insertion of units of the dummy in the synchronization signal issued and 10 for implementing the process

摘要

Method of decoying an interception system and / or of jamming, consisting in generating, in a signal to be transmitted, a dummy block (syncf), said method comprising the following steps: - define the said sequence (a dummy syncf) and its position in time and / or frequency within the signal to be transmitted, the values of the symbols of the said sequence artificial and their positions in time and / or frequency is different from those of the symbols of a synchronisation sequence (syn) that includes said signal, - estimate the value and the position of the dummy bits (lf) to be inserted within the sequence of data (of the t) to be transmitted to the input of the chain of transmission of such a manner as to obtain, in the sequence produced at the output of the chain of transmission, the value and the predefined temporal position of the symbols of the said sequence (a dummy syncf), - to be inserted within the said sequence of data (of the t), the bits display dummies (lf) to the positions obtained.