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Multipath-assisted maximum-likelihood indoor positioning using UWB signals

E. Leitinger ; Markus Fröhle (Institutionen för signaler och system, Kommunikationssystem) ; P. Meissner ; K. Witrisal
IEEE ICC 2014 Workshop on Advances in Network Localization and Navigation (ANLN) p. 170-175. (2014)
[Konferensbidrag, refereegranskat]

Multipath-assisted indoor positioning (using ultrawideband signals) exploits the geometric information contained in deterministic multipath components. With the help of a-priori available floorplan information, robust localization can be achieved, even in absence of a line-of-sight connection between anchor and agent. In a recent work, the Cramér-Rao lower bound has been derived for the position estimation variance using a channel model which explicitly takes into account diffuse multipath as a stochastic noise process in addition to the deterministic multipath components. In this paper, we adapt this model for position estimation via a measurement likelihood function and evaluate the performance for real channel measurements. Performance results confirm the applicability of this approach. A position accuracy better than 2.5 cm has been obtained in 90% of the estimates using only one active anchor at a bandwidth of 2GHz and robustness against non-line-of-sight situations has been demonstrated.


Article number 6881191



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Denna post skapades 2014-10-02. Senast ändrad 2014-10-29.
CPL Pubid: 203646

 

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Institutioner (Chalmers)

Institutionen för signaler och system, Kommunikationssystem (1900-2017)

Ämnesområden

Informations- och kommunikationsteknik
Signalbehandling

Chalmers infrastruktur