DEVICE FOR RECOGNIZING INFORMATION SIGNALS Russian patent published in 2006 - IPC H04B10/06 

FIELD: automatics and computer science, possible use for analyzing amplitude spectrum of information signals and determining the type of their modulation.

SUBSTANCE: device for recognizing information signals has receiving antenna, heterodyne, first mixer, first intermediate frequency amplifier, first, second and third multipliers of phase by two, laser, collimator, first, second, third and fourth Bragg cells, first, second, third and fourth lenses, first, second, fourth photo-detectors, first, second, third and fourth oscillographic indicators, block for receiving and amplifying signal, switch, fifth Bragg cell, first and second diaphragm, fifth lens, optical wedge, fifth photo-detector, fifth oscillographic indicator, first and second narrowband filters, first and second and third phase-inverters, first, second and third and fourth adders, first and second phase shifters for 90°, second mixer, second amplifier of intermediate frequency.

EFFECT: improved selectivity, resistance to interference and trustworthiness of information signals recognition by suppressing false signals (interference), received through additional channels.

6 dwg