FIELD: radio engineering.
SUBSTANCE: used in radio monitoring equipment, radio direction finders, as well as in tools and systems in which the type of modulation of radio signals of radio emission sources is determined in the interests of their subsequent classification. To do this, at the input of the N-channel maximum selection circuit, the signal-to-noise ratio is increased by compensating for additive Gaussian noise at the outputs of each of the processing channels. The average power of the noise component of the input process is determined in the form of an additive mixture of the useful radio signal and noise and subtracted from the low-frequency component of the spectrum of the input process at the inputs of the dividers and, accordingly, at the inputs of the N-channel maximum selection circuit.
EFFECT: increasing the accuracy of determining the type of modulation of radio signals.
1 cl, 1 dwg
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