Author(s)

A. Filip, J. Taufer, H. Mocek, L. Bažant & V. Maixner

Abstract

Integration of a GNSS receiver with additional inertial sensors can significantly improve the performance and reliability of the train position locator (TPL). However, if the TPL is intended for safety related applications like signalling and train control, it should also be robust to sensor and system failures. This means that the locator must meet the high safety integrity design and have its own diagnostics capable of providing timely warnings to a user in the case of a failure. This paper deals with the high integrity architecture of the TPL. The architecture consists of the two fundamental subsystems: 1) the dual navigation system providing the state vector estimate by means of the two independent navigation loops and 2) autonomous safety integrity monitor (AIM) which continuously checks the safety in

Keywords