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Bayesian multipath-enhanced device-free localization: Simulation- and measurement-based evaluation

Schmidhammer, Martin and Siebler, Benjamin and Gentner, Christian and Sand, Stephan and Fiebig, Uwe-Carsten (2022) Bayesian multipath-enhanced device-free localization: Simulation- and measurement-based evaluation. IET Microwaves, Antennas & Propagation, 16 (6), 327 -337. Institution of Engineering and Technology (IET). doi: 10.1049/mia2.12244. ISSN 1751-8725.

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Abstract

Device-free localisation (DFL) systems infer presence and location of moving users by measuring to which extent they change the received signal power in wireless links. Consequently, users not only induce perturbations to the power of the line of sight but also to the power of reflected and scattered signals which are observed in the received signal as multipath components (MPCs). Since the propagation paths of MPCs differ inherently from the line-of-sight path, these propagation paths can be considered as additional network links. This extended network determines the multipath-enhanced device-free localisation (MDFL) system. Based on empirical models that relate perturbations in the received power of MPCs to the user location, the localisation problem can be solved by non-linear Bayesian filtering. In this work, we investigate the point mass filter and the particle filter as possible solutions. We demonstrate the applicability of these solutions using ultra-wideband measurements and develop and verify a numerical simulation framework that flexibly enables a sound evaluation of MDFL. Based on both measurements and simulations, we show a significant improvement of the localisation performance of MDFL compared to DFL. The overall localisation performance is thereby comparable for both filters. Eventually, we show that complexity and divergence probability, rather than localisation performance, are the decisive factors for the choice of the filter solution.

Item URL in elib:https://elib.dlr.de/187067/
Document Type:Article
Title:Bayesian multipath-enhanced device-free localization: Simulation- and measurement-based evaluation
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Schmidhammer, MartinUNSPECIFIEDhttps://orcid.org/0000-0002-9345-142XUNSPECIFIED
Siebler, BenjaminUNSPECIFIEDhttps://orcid.org/0000-0002-1745-408XUNSPECIFIED
Gentner, ChristianUNSPECIFIEDhttps://orcid.org/0000-0003-4298-8195UNSPECIFIED
Sand, StephanUNSPECIFIEDhttps://orcid.org/0000-0001-9502-5654UNSPECIFIED
Fiebig, Uwe-CarstenUNSPECIFIEDhttps://orcid.org/0000-0003-2736-1140UNSPECIFIED
Date:31 March 2022
Journal or Publication Title:IET Microwaves, Antennas & Propagation
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:16
DOI:10.1049/mia2.12244
Page Range:327 -337
Publisher:Institution of Engineering and Technology (IET)
ISSN:1751-8725
Status:Published
Keywords:Bayes methods, radiowave propagation, ultra‐wideband technology, wireless channels, wireless sensor networks
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Transport System
DLR - Research area:Transport
DLR - Program:V VS - Verkehrssystem
DLR - Research theme (Project):V - Energie und Verkehr (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation > Communications Systems
Deposited By: Schmidhammer, Martin
Deposited On:24 Jun 2022 09:00
Last Modified:29 Nov 2023 15:08

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