METHOD OF AND DEVICE FOR COMBINED RADIO COMMUNICATION AND RADIO NAVIGATION FOR USE IN RAILWAY TRANSPORT Russian patent published in 2006 - IPC B61L25/02 

FIELD: railway signaling and communication.

SUBSTANCE: proposed group of invention is designed for exchange of messages between dispatcher station and train and to determine parameters of running train directly at dispatcher station. Method employs retransmission of signals by means of geostationary satellite, use of complex signals with combination phase-shift keying and on-off keying, their correlation processing, transmission and reception of information at two frequencies. Device contains geostationary satellite-retransmitter with transmit-receive antennas, RP sequence generator, high-frequency generators, phase keyers, oscillators, mixers, analog signal sources, amplitude modulators, first intermediate frequency amplifier, power amplifiers, transmit and receive antennas, receive antennas, second intermediate frequency amplifiers, amplitude limiters, synchronous detectors, multipliers, band-pass filters, phase detectors, storage units, correlation processing unit, locomotive covered and speed meter, registration and analyzing units, change-over switch and difference frequency amplifier.

EFFECT: provision of simultaneous exchange of messages between dispatcher station and locomotive, determination of parameters of running train at dispatcher station, improved noise resistance and accuracy of determination of running train parameters when train is far from dispatcher station.

3 cl, 6 dwg