Correlation receiver with quadrature channels for continuously working automatic cab signalling

Abstract

Increase of reception validity of continuously working automatic cab signalling (CWACS) signals is still an actual task. One of the possible ways of its solution is to improve existing CWACS receivers of to develop new ones with increased noise immunity. The paper presents a correlation receiver of CWACS signals with quadrature channels. The authors have considered its functional scheme and a simulation model developed in the Simulink environment. Preliminary results gained with the use of the simulation model showed that the receiver is workable. Results of the study can be used at development of new or at improvement of existing microprocessor receivers of CWACS channel.