FIELD: radio engineering, communication.
SUBSTANCE: method employs original signal processing concurrently on multiple analogue-to-digital converters (ADC) with different sampling frequencies; calculating the amplitude spectrum on each digitised sequence; further scanning the obtained spectra on a single frequency axis in the Nyquist zone in an order which is inverse to the arrangement thereof during sampling; selecting signals in the spectral range by comparing with a given threshold of amplitude spectra from each ADC; selecting spectral lines from all ADC matching on frequency position; a decision on the existence of a narrow-band signal at said frequency is made by finding lines which match on the position on the frequency axis from all ADC.
EFFECT: wider signal analysis band and performing real-time analysis.
4 dwg
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