Massachusetts Institute of Technology

Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V.

Datalogic IP Tech S.r.l.

Consorzio Nazionale Interuniversitario Per Le Telecommunicationi

Consorzio Nazi Interuniv Per Le Telecomunicazioni (cnit)

Consorzio Nazionale Interuniversitario Per Le Telecomunicazioni

Andrea Conti

Niels Hadaschik

Marco Bottazzi

Moe Z Win

Federico Natali

Wenhan Dai

Enrico Savioli

Davide Dardari

Stefania Bartoletti

Raffaele Derrico

Alain Sibille

A ranging system includes an input for receiving a wireless signal and a detector for determining an estimate of a time-of-arrival of the wireless signal at the ranging system. The detector includes a first module for processing the wireless signal according to a non-linear, monotonic transformation to generate a modified signal, a second module for compressing the modified signal according to a linear transformation, resulting in a compressed signal including a number of elements, each element corresponding to a different time segment of the modified signal, and a third module for applying a decision function for determining an output including a first element of the number of elements, corresponding to the time-of-arrival of the wireless signal at the ranging system, applying the decision function, including comparing the elements of the compressed signal to corresponding thresholds of a number of thresholds associated with the number of elements.

Wideband ranging system

In a UWB real time locating system, UWB readers () are synchronized by adjusting a clock of a UWB slave reader () until the UWB reader () receives each UWB pulse () of a sequence of UWB pulses () having a predetermined pulse period (Tp) and encoding a master UWB reader unique identifier at an expected time slot () within each predetermined pulse period (Tp), the expected time slot () being related to the distance between the UWB tag reader () and a master UWB reader ().

Synchronization of a real-time UWB locating system

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 (). The system comprises a plurality of anchor nodes () and a plurality of non-regenerative relays () 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 () collects the signals received by the anchor nodes () to estimate the position of the tag.

Localization method and system using non-regenerative UWB relays

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Bologna, Italy

Andrea Conti