US Patent 11911659 Local positioning system using two-way ranging

There is disclosed a system for local positioning. The system includes a plurality of anchors placed within a facility, the anchors in fixed positions following a calibration procedure, and a plurality of movable tags, attached to individuals and/or objects used to play a sport within the facility. A tracking server for using the plurality of anchors, in two-way-ranging communication with the plurality of movable tags, to track movement of the plurality of movable tags within the facility on an as-desired basis.