METHOD OF PROVIDING ENERGETIC CONCEALMENT Russian patent published in 2019 - IPC G01S19/03 

FIELD: electrical communication equipment.

SUBSTANCE: invention relates to satellite communications. Technical result is achieved by radio waves emitted from an artificial Earth satellite with a reduced carrier frequency (up to f₀=30…100 MHz) during propagation through the ionosphere is dissipated at inhomogeneities of electron concentration. Therefore, to the ground receiver of the satellite communication system (SCS) and the radio intercept receiver, a plurality of beams with relative phase shifts, the value of which is directly proportional to fluctuations of the electron concentration in the ionosphere irregularities and inversely proportional to the carrier frequency, arrives. Lowering of the carrier frequency of the transmitted signal is accompanied by an increase in the relative phase shifts of the incoming beams. When they exceed value 2π, interference of said beams causes occurrence of Rayleigh signal fading at the input of the SCS receiver and the radio intercept receiver. To combat Rayleigh fading and to provide an allowable error probability in the SCS receiver, it is advisable to use spatially spaced reception of signals on two antennae.

EFFECT: high noise-immunity of the SCS owing to increasing its energetic concealment when the radio intercept receiver is close to the ground-based SCS receiver.

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