A Map-Free Indoor Localization Method Using Ultrawideband Large-Scale Array Systems

Yilin Ji, Johannes Hejselbæk, Wei Fan, Gert F. Pedersen

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

In this paper, we propose a novel map-free indoor
localization method using ultrawideband large-scale array systems
in high frequency bands. The proposed localization method
comprises two stages, namely a channel-estimation stage and a
target-localization stage. Due to the large array aperture, the
locations of the scatterers associated to the multipath components
(MPCs) can be estimated with the spherical wavefront model.
The estimated scatterers are further used as virtual anchors to
estimate the location of the target through trilateration. Since
the scatterer locations are obtained from channel measurements,
the map of the environment is not needed for localization. The
proposed method is also assessed with measurements conducted
in a cluttered indoor environment with line-of-sight (LoS) and
non-line-of-sight (NLoS) scenarios. Results show the proposed
algorithm attains good localization accuracy in both scenarios.
Original languageEnglish
JournalI E E E Antennas and Wireless Propagation Letters
Volume17
Issue number9
Pages (from-to)1682-1686
Number of pages5
ISSN1536-1225
DOIs
Publication statusPublished - 6 Aug 2018

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Ultra-wideband (UWB)
Wavefronts
Channel estimation
Anchors
Frequency bands

Cite this

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title = "A Map-Free Indoor Localization Method Using Ultrawideband Large-Scale Array Systems",
abstract = "In this paper, we propose a novel map-free indoorlocalization method using ultrawideband large-scale array systemsin high frequency bands. The proposed localization methodcomprises two stages, namely a channel-estimation stage and atarget-localization stage. Due to the large array aperture, thelocations of the scatterers associated to the multipath components(MPCs) can be estimated with the spherical wavefront model.The estimated scatterers are further used as virtual anchors toestimate the location of the target through trilateration. Sincethe scatterer locations are obtained from channel measurements,the map of the environment is not needed for localization. Theproposed method is also assessed with measurements conductedin a cluttered indoor environment with line-of-sight (LoS) andnon-line-of-sight (NLoS) scenarios. Results show the proposedalgorithm attains good localization accuracy in both scenarios.",
author = "Yilin Ji and Johannes Hejselb{\ae}k and Wei Fan and Pedersen, {Gert F.}",
year = "2018",
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language = "English",
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A Map-Free Indoor Localization Method Using Ultrawideband Large-Scale Array Systems. / Ji, Yilin; Hejselbæk, Johannes; Fan, Wei; Pedersen, Gert F.

In: I E E E Antennas and Wireless Propagation Letters, Vol. 17, No. 9, 06.08.2018, p. 1682-1686.

Research output: Contribution to journalJournal articleResearchpeer-review

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T1 - A Map-Free Indoor Localization Method Using Ultrawideband Large-Scale Array Systems

AU - Ji, Yilin

AU - Hejselbæk, Johannes

AU - Fan, Wei

AU - Pedersen, Gert F.

PY - 2018/8/6

Y1 - 2018/8/6

N2 - In this paper, we propose a novel map-free indoorlocalization method using ultrawideband large-scale array systemsin high frequency bands. The proposed localization methodcomprises two stages, namely a channel-estimation stage and atarget-localization stage. Due to the large array aperture, thelocations of the scatterers associated to the multipath components(MPCs) can be estimated with the spherical wavefront model.The estimated scatterers are further used as virtual anchors toestimate the location of the target through trilateration. Sincethe scatterer locations are obtained from channel measurements,the map of the environment is not needed for localization. Theproposed method is also assessed with measurements conductedin a cluttered indoor environment with line-of-sight (LoS) andnon-line-of-sight (NLoS) scenarios. Results show the proposedalgorithm attains good localization accuracy in both scenarios.

AB - In this paper, we propose a novel map-free indoorlocalization method using ultrawideband large-scale array systemsin high frequency bands. The proposed localization methodcomprises two stages, namely a channel-estimation stage and atarget-localization stage. Due to the large array aperture, thelocations of the scatterers associated to the multipath components(MPCs) can be estimated with the spherical wavefront model.The estimated scatterers are further used as virtual anchors toestimate the location of the target through trilateration. Sincethe scatterer locations are obtained from channel measurements,the map of the environment is not needed for localization. Theproposed method is also assessed with measurements conductedin a cluttered indoor environment with line-of-sight (LoS) andnon-line-of-sight (NLoS) scenarios. Results show the proposedalgorithm attains good localization accuracy in both scenarios.

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DO - 10.1109/LAWP.2018.2863291

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JO - I E E E Antennas and Wireless Propagation Letters

JF - I E E E Antennas and Wireless Propagation Letters

SN - 1536-1225

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