Localization method and system using non-regenerative UWB relays

US9311798B2 · kind B2 · utility

Assignees

• COMMISSARIAT A L'ENERGIE ET AUX ENERGIES ALTERNATIVES · FR
• CONSORZIO NAZI INTERUNIV PER LE TELECOMUNICAZIONI (CNIT) · IT

Inventors

• Raffaele D’ERRICO · Grenoble, FR
• Andrea Conti · Bologna, IT
• Davide Dardari · Savignano sul Rubicone, IT
• Alain SIBILLE · Antony, FR

Key dates

• Filing date: Dec 13, 2012
• Grant date: Apr 12, 2016
• Expiry date: Aug 29, 2033

Classification

• Technology area (CPC G): Physics
• CPC primary: G01S5/0289
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The present invention relates to a method and a system for determining the position of an object which can be a passive or an active tag (140). The system comprises a plurality of anchor nodes (111,112) and a plurality of non-regenerative relays (121,122,123) of known positions. In case of an active tag, a UWB pulse signal is emitted by the tag and received by the anchor nodes either directly or via a relay. In case of a passive tag, UWB pulse signals are sent by the anchors nodes and reflected back, either way being either a LOS path or a relayed path. A processing node (130) collects the signals received by the anchor nodes (111,112) to estimate the position of the tag.