Synthesis of a device for anti-jamming reception of signals of tonal rail circuits on the background of additive five-component interference

Abstract

Rail chains are the basic element of most railway automation and telemechanics systems. Their work is based on the transmission of information signals via a two-wire communication line, in which a rail pair is used as wires. Such a communication line is extremely weakly protected from the penetration of natural and man-made interference into it. These disturbances are both impulsive and continuous influences. In both cases, they can be either single or periodic. In addition, a rail circuit is usually affected by several different types of interference at the same time. Moreover, the parameters of each of the interference change over time. Therefore, information signals of rail circuits operating at frequencies of hundreds and (or) thousands of hertz (the so-called tonal rail circuits of the TRC) undergo a whole complex of different types of distortions. Since the total number and type of man-made noise sources operating near rails is constantly increasing, the previously introduced methods and signal processing devices become less effective. For the same reasons, the relative number of errors in the reception of TRC information signals is also growing. As a result, train traffic safety is reduced. Therefore, the development of means for noise-immune reception of signals from the TRC is not only in dire need of further scientific research. The results of such development can be used as the basis for new means of ensuring the safety of train traffic. For these reasons, this topic is relevant.