Abstract: A method for receiving a radiofrequency signal in a system having an emitter, a satellite and at least one characterization receiver implementing a characterization phase of the satellite. The method includes: transmitting to the emitter, over a first transmission link, at least one transmission command of at least one reference signal, receiving the at least one reference signal, emitted by the emitter over a second transmission link via the satellite, termed the received signal, estimating at least one distortion generated by the satellite, from the at least one reference signal, delivering at least one piece of information on compensation of the distortions affecting the received signal, and transmitting to the emitter, over the first transmission link, the at least one piece of distortion compensation information.

Abstract: A method for receiving a radiofrequency signal in a system having an emitter, a satellite and at least one characterization receiver implementing a characterization phase of the satellite. The method includes: transmitting to the emitter, over a first transmission link, at least one transmission command of at least one reference signal, receiving the at least one reference signal, emitted by the emitter over a second transmission link via the satellite, termed the received signal, estimating at least one distortion generated by the satellite, from the at least one reference signal, delivering at least one piece of information on compensation of the distortions affecting the received signal, and transmitting to the emitter, over the first transmission link, the at least one piece of distortion compensation information.

Abstract: A method is provided for generating a delay in the transmission of a multicarrier signal formed by a time-dependent series of symbols, in which the symbols include a set of complex time-dependent samples, in which each symbol includes a useful part and a guard time. The method includes the following steps: writing the samples forming the multicarrier signal in a memory; reading the memory with a variable latency corresponding to the delay; and modifying the variable latency by duplicating or suppressing at least one sample contained in a guard time.

Abstract: The disclosure relates to a method for isofrequency retransmission of at least one digital signal, including receiving said source signal on a receiving antenna; retransmitting said signal received to a transmitting antenna, a coupling occurring between said transmitting and receiving antennas; extracting at least one coupling echo from said signal received; processing of said coupling echo, so as to generate at least one correction signal; subtracting said correction signal from said source signal, generating an improved signal; and regenerating said improved signal by demodulation/remodulation, so as to retransmit said improved signal to said transmitting antenna.