US 12,487,314 B2 · Systems and methods for determining vehicle locations using track geometry

Abstract

Described herein are techniques for determining motion characteristics of trains traveling along a train track. In some embodiments, a processor may determine an estimated position of a train using an observed position obtained using one or more UWB antennas and an observed position obtained using one or more GNSS receivers. In some embodiments, a processor may access information specifying a geometry of a train track and determining the position of a train along the train track using an observed position determined using one or more UWB antennas and/or GNSS receiver(s) and the information specifying the geometry of the train track. In some embodiments, a processor may determine estimated positions of a train using the geometry of the train track and at least one observation of the train obtained using one or more positioning devices and select the position of the train from among the estimated positions.

Claims20

Dependent claims

A system for determining a position of a train traveling along a train track, the system comprising:

at least one radio-frequency (RF) antenna configured to transmit and/or receive an RF signal to and/or from at least one anchor node positioned proximate the train track;
and
at least one processor configured to:
obtain an arrival time of the RF signal;
access information specifying a geometry of the train track;
and
determine the position of the train along the train track using the arrival time and the information specifying the geometry of the train track,
wherein the at least one processor is configured to determine the position of the train along the train track at least in part by determining whether at least one observed position of the train is RF visible to the at least one anchor node using the at least one RF antenna.

5 more elements

A non-transitory computer-readable medium having instructions stored thereon that, when executed by at least one processor, cause the at least one processor to perform a method of determining a position of a train traveling along a train track, the method comprising:

transmitting and/or receiving, using at least one radio-frequency (RF) antenna, an RF signal to and/or from at least one anchor node positioned proximate the train track;
obtaining, by at least one processor, an arrival time of the RF signal;
accessing, by the at least one processor, information specifying a geometry of the train track;
and
determining, by the at least one processor, the position of the train along the train track using the arrival time and the information specifying the geometry of the train track,
wherein determining the position of the train along the train track comprises determining whether at least one observed position of the train is RF visible to the at least one anchor node using the at least one RF antenna.

3 more elements

Dependencies are inferred from the claim text.

Systems and methods for determining vehicle locations using track geometry

Life of this patent

Systems and methods for determining vehicle locations using track geometry

Life of this patent

Abstract

Claims20