Joint anchor-less tracking and room dimensions estimation through IR-UWB peer-to-peer communications
Résumé
In this paper we jointly address the problems of node location tracking and indoor mapping in the absence of infrastructure, relying on peer-to-peer IEEE 802.15.4a Impulse Radio - Ultra Wideband (IR-UWB) links. Coarse Time of Arrival (ToA) measurements, which are obtained within a low complexity Energy Detection (ED) receiver, are mapped into the direct path and single-bounce reflected multipath components. Then these measurements feed a multi-hypothesis tracking filter to retrieve the peers' normalized coordinates and the room dimensions. Preliminary results are provided in a canonical mobile scenario, where dense multipath channels are generated through realistic UWB Ray-Tracing simulations. On this occasion, remaining structural transmitter/receiver and mirror ambiguities are pointed out and illustrated.
Mots clés
IR-UWB peer-to-peer communications
UWB ray-tracing simulations
canonical mobile scenario
coarse ToA measurements
coarse time of arrival measurements
direct path reflected multipath components
indoor mapping
joint anchor-less tracking
low complexity ED receiver
low complexity energy detection receiver
multihypothesis tracking filter
multipath channels
node location tracking
peer-to-peer IEEE 802.15.4a IR-UWB links
peer-to-peer IEEE 802.15.4a impulse radio-ultrawideband links
room dimension estimation
single-bounce reflected multipath components
Zigbee
filtering theory
mobile radio
peer-to-peer computing
radio links
radio receivers
radio transmitters
ray tracing
target tracking
time-of-arrival estimation
ultra wideband communication
wireless channels