Impact of Antennas on the Anchor-less Indoor Localization of a Static IR-UWB Pair

Vincenzo La Tosa (1) , Benoît Denis (1) , Serge Bories (1) , Bernard Uguen (2)

1 CEA-LETI - Commissariat à l'énergie atomique et aux énergies alternatives - Laboratoire d'Electronique et de Technologie de l'Information
2 IETR - Institut d'Électronique et des Technologies du numéRique

This paper investigates the impact of realistic antennas on joint anchor-less localization and indoor characterization based on Impulse Radio (IR) Ultra Wideband (UWB) communications. In this frame, the Maximum Averaged Likelihood (MAL) algorithm and its extended version are considered, both relying on a tree approach consisting in two stages. The first part of the process, which is common to both algorithms, exploits the cross-correlation between received and locally predicted paths. The second stage calculates the averaged likelihood of measured path parameters obtained in the previous step, but different measurements are used for MAL and extended MAL (eMAL). In the first algorithm, only the Angle of Incidence (AoI) and the Time of Arrival (ToA) are considered, whereas the eMAL tree algorithm also accounts for two couples of Angles of Departure (AoDs) and Angles of Arrival (AoAs). The estimation errors of both nodes coordinates and room dimension obtained with the two algorithms are compared for three realistic UWB antennas. Finally, the remaining algorithm-independent ambiguities (i.e. resulting from scenario and geometry) are discussed.

Mots clés: direction-of-arrival estimation; indoor communication; maximum likelihood estimation; ultra wideband antennas; ultra wideband communication; UWB antenna; UWB communication; anchor-less indoor localization; angle of incidence; angles of arrival; angles of departure; eMAL tree algorithm; extended MAL algorithm; impulse radio; indoor characterization; maximum averaged likelihood; realistic antenna; room dimension; static IR-UWB pair; time of arrival

Domaines: Traitement du signal et de l'image [eess.SP]; Traitement du signal et de l'image [eess.SP]

Vincenzo La Tosa, Benoît Denis, Serge Bories, Bernard Uguen. Impact of Antennas on the Anchor-less Indoor Localization of a Static IR-UWB Pair. Personal Indoor and Mobile Radio Communications (PIMRC), 2010, Sep 2010, Istambul, Turkey. pp.858-864, ⟨10.1109/PIMRC.2010.5672035⟩. ⟨hal-00684277⟩