ACOUSTOOPTICAL SPECTRUM ANALYZER Russian patent published in 2003 - IPC

FIELD: radio measurement technology, visual analysis of amplitude spectrum of analyzed signals and determination of type of their modulation. SUBSTANCE: acoustooptical spectrum analyzer includes laser, collimator, Bragg cells, lenses, matrixes of photodetectors, indicators, receiving antenna, mixers, intermediate frequency amplifiers, multipliers, narrow-band filters, amplitude detectors, adder, 90 degrees phase inverter, key, band- pass filters, subtracter, low-pass filter, inverse amplifiers, adjustable phase inverters, calibration oscillator, phase detector and controlling element. Complete suppression of false signal received over mirror channel is achieved thanks to identification of reception paths that is ensured by means of complex amplitude-phase identification system. EFFECT: increased sensitivity and noise immunity of acoustooptical analysis by way of suppression of lack of identity of receiving paths. 1 dwg