US Patent 11102746 Positioning system

A positioning system, includes a plurality of anchor stations each configured to transmit a radio frequency signal. A mobile station includes a radio frequency transceiver configured to transmit and receive a radio frequency signal from at least one of the plurality of anchor stations. A processing unit is configured to determine position information of the mobile unit based upon the transmitted and received radio frequency signal. Another positioning system uses a number of beacons ranging a number of mobile tags with ultra-wide band ranging, and communicating wirelessly with an application server.