In a radio location system for vehicles moving along a guideway, a transmitter for energizes a transponder beside the guideway. A first detector for detects a response signal from the energized transponder to determine the transponder identification. A second detector detects a positional signal received from the transponder that is decoupled from the first signal and contains precise positional information. In one embodiment, the second detector picks up a crossover signal from a crossover antenna.
LOCATION OF A TRANSPONDER CENTER POINT
LAGEBESTIMMUNG EINES TRANSPONDER-MITTELPUNKTS
LOCALISATION D'UN POINT CENTRAL DE TRANSPONDEUR
2017-09-13
Patent
Electronic Resource
English
Identity Transponder System for Vehicle Location
Automotive engineering | 1976
|European Patent Office | 2018
European Patent Office | 2018
|