Saiapina I. Improvement of methods and means to increase audio frequency track circuits noise immunity

Research object is a process of spreading information signals in the audio frequency track circuits. Research was conducted with the use of methods of software simulation, mathematical statistics, harmonic analysis, the theory of electric circuits, the theory of matrices, the theory of neural networks. As a result of research new scientifically based methods for increasing the noice immunity of the audio frequency track circuit, for adaptive control of the increasing noise immunity device of the audio frequency track circuit were obtained, the method for receiving amplitude-manipulated signals of the audio frequency track circuit and the simulation model of the audio frequency track circuit were improved. Railway enterprises which deal with systems based on audio frequency track circuits with centralized equipment placement are the application scope for obtained results.