| 摘要 |
System enabling the safety of railway traffic to be increased. It includes a ground transmitter consisting of coders delivering pseudo-random binary series, different by means of cyclic code generators and selected by command in order to be modulated by a modulator, and a receiver on board the trains which consists of demodulators and decoders comparing one of the said series together with identical cyclic code generators to those of the transmitter and allowing reconstruction of the command transmitted. Application: railway traffic safety. <IMAGE>
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