DEVICE WHICH RECOGNIZES INFORMATION SIGNALS Russian patent published in 1997 - IPC

FIELD: automation and computer engineering, in particular, visual analysis of amplitude spectrum of information signals and detection of type of their modulation. SUBSTANCE: device has antenna 1, heterodyne 2, mixer 3, intermediate frequency amplifier 4, first, second and third signal phase doubling units 5, 6, 7, light-emitting source 8, collimator 9, first, second, third and fourth signal modulators 10, 11, 12 and 13, first, second, third and fourth lenses 14, 15, 16 and 17, first, second, third and fourth photodetectors 18, 19, 20 and 21, first, second, third and fourth indicators 21, 23, 24 and 25, signal receiver and amplifier 26, delay line 27, switch 28, fifth and sixth signal modulators 29 and 30, fifth lens 31, fifth photodetector 32 and fifth indicator 33. Laser is used as light- emitting source. Bragg cells are used as signal modulators 10-13, 29, 30. Oscilloscopes are used as indicators 22-25, 33. EFFECT: increased functional capabilities due possibility to detect frequency modulation of received signal. 5 dwg