Highly-accurate radio location of beacons in a warehouse

Details Highly-accurate radio location of beacons in a warehouse Highly-accurate radio location of beacons in a warehouse

G - Physics

01

S

G01S 5/06 (2006.01) G01V 3/12 (2006.01)

Patent

CA 2558626

A system for highly accurate radio location of a passive radio beacon coincident with an object to be tracked is disclosed. The beacon directs radio signals to an antenna array located proximate to the warehouse aisles and is positioned such that it receives signals that reflect off the aisle walls grazing angles that are generally less than a maximum, and as such act effectively as mirrors. Ray-tracing techniques may be applied to calculate the response at the antenna array. The multiplicity of reflections may be considered virtual radiating elements setting up a MIMO environment of a plurality of orthogonal modes. Because the location of the beacon is calculated, noise effects can be substantially omitted with an increase in precision of the estimate.

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