Distance estimation system and method for a railway vehicle

摘要

There is provided a ranging system for a railway vehicle. The system includes a reflector disposed along a railway relative to a stopping point and a ranging unit disposed on the railway vehicle. The ranging unit includes a transceiver configured to transmit an outbound signal and receive a corresponding reflected signal from the reflector. The ranging unit also includes a data storage unit configured to store a reference distance between the reflector and the stopping point. The ranging unit also includes a processor configured to determine a measured distance between the railway vehicle and the reflector based on an elapsed time between the transmitting the outbound signal and receiving the reflected signal. The processor determines a distance between the railway vehicle and the stopping point based on the measured distance and the reference distance.

主权项

1. A ranging system for a railway vehicle, comprising:
reflectors disposed along a railway at different locations relative to a stopping point; and a ranging unit disposed on the railway vehicle, the ranging unit comprising:
a transceiver configured to transmit outbound signals and receive corresponding reflected signals from the reflectors, the reflected signals being modulated by the reflectors;a data storage unit configured to store one or more reference distances between one or more of the reflectors and the stopping point; anda processor configured to:
identify at least one of the reflectors from among the reflectors using modulation of the reflected signal;determine one or more measured distances between the railway vehicle and the at least one of the reflectors based on an identification of the at least one of the reflectors ; anddetermine one or more distances between the railway vehicle and the stopping point based on the one or more measured distances and the one or more reference distances.