FIELD: physics.
SUBSTANCE: analysed radio signal is transmitted to the electrical input of an acousto-optic deflector, where said signal is converted to an acoustic signal and then to an optical signal. Said signal then undergoes Fourier transformation while recording intensity distribution thereof using a JV-element line of photodiodes. Further, video signals are generated at outputs of said photodiodes with levels which are proportional to levels of said intensity distribution, after which frequency of the radio signal is calculated, which is identified with the abscissa of the axis of symmetry of intensity distribution of the light signal discretised by the photodiodes.
EFFECT: high accuracy of measuring frequency of the radio signal.
6 dwg
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