Patent ID: 8643536
Filing Date: 2014-02-04
Classification: G01S,H01Q

Abstract:
1. A positioning system for vehicles in an area, said system operating with radio frequency devices based on Ultra-Wide-Band or Frequency-Modulated Continuous Wave, comprising: a two-way radio antenna, associated with each vehicle, including a transmitting element and a receiving element; a plurality of reference antennas located in known predetermined positions within the area, said reference antennas having retro-directive arrays, said retro-directive arrays including: encoding means, or signal processing means, for transmitting an identification code of the reference antenna; control means for processing the spatial and temporal data resulting from the communication through the radio waves transmitted and received by the vehicle antennas and reflected by said reference antennas, said control means calculating the distance of the vehicle from the reference antennas that have reflected the signal transmitted by the antennas.