TRAIN POSITION DETECTION DEVICE

摘要

Based on a ratio between Doppler frequencies calculated from a plurality of reception signals outputted by a receiver, a position detector calculates a relative position of a plurality of antennas in a mobile wireless apparatus to a stationary wireless apparatus. A train position detector calculates a position of a train from the calculated relative position, a placement position of the stationary wireless apparatus and placement positions in the train of the plurality of antennas.

主权项

1: A train position detection device, comprising:
a receiver to take out electric waves as reception signals respectively through a plurality of antennas, said plurality of antennas placed on a train traveling on a track with a specified interval therebetween, and said electric waves provided from a stationary wireless apparatus that is placed beside the track of the train and radiates, as an electric wave, a transmission signal having a specified frequency, amplitude or phase; and a position detector to calculate a relative position of the plurality of antennas to the stationary wireless apparatus from a ratio between Doppler frequencies calculated respectively from the plural reception signals.