FIELD: physics.
SUBSTANCE: positioning system (600) based on ultrabroadband two-pass distance determination includes a plurality of active marks (606), each having a position, and a plurality of radio beacons (604) configured to determine the position of mark (606) from the plurality of active marks. Active marks (606) and beacons (604) are continuously synchronized with common time base.
EFFECT: invention relates to means of wirelessly determining location of an object.
22 cl, 6 dwg
