CLOCK SYNCHRONISATION METHOD AND DEVICE THEREFOR Russian patent published in 2014 - IPC G04R20/02 

FIELD: radio engineering, communication.

SUBSTANCE: device which carries out the disclosed method comprises a relay artificial earth satellite and two spaced-apart ground-based stations A and B. Each ground-based station comprises a frequency and time standard 1, heterodynes 2.1 and 2.2, a pseudo-noise signal generator 3, a switch 4, mixers 5, 13 and 19, a first intermediate frequency amplifier 6, power amplifiers 7 and 12, a duplexer 8, a transceiving antenna 9, clippers 10 and 15, buffer storage devices 11 and 16, a delay and delay derivative measuring device 17, a +90° phase changer 18, second intermediate frequency amplifiers 14 and 20, a -90° phase changer 21, an adder 22, multipliers 24, 30 and 31, amplitude detectors 25, 32 and 33, a switch 26, a calibrator 27, controlled phase changers 28 and 29, a subtractor unit 34, low-pass filters 35 and 38, inverted amplifiers 36 and 39.

EFFECT: high noise-immunity and accuracy of synchronising remote time scales through complete suppression of spurious signals received over an image channel by identifying receiving channels.

2 cl, 4 dwg