FIELD: navigation. SUBSTANCE: two beacons are used for determining Cartesian coordinates of object. Beacons 1-3 are disposed in vertexes of right isosceles triangle. Device also has receiver of beacons' signals, unit 5 for determining difference in times of arrival of signals from beacons, comparator 6, unit 7 for determining predicted initial value of coordinate, adder 8, unit 9 for computing Cartesian coordinate, unit 10 for determining calculated value of difference in distances from beacons to objects, subtraction unit 11 and two scaling units 12, 13. EFFECT: improved speed of operation. 2 dwg
