Nonparametric obstruction detection for UWB localization

Ultra-wide bandwidth (UWB) transmission is a promising technology for indoor localization due to its fine delay resolution and obstacle-penetration capabilities. However, the presence of walls and other obstacles introduces a positive bias in distance estimates, severely degrading localization accur...

Full description

Bibliographic Details
Main Authors: Win, Moe Z., Gifford, Wesley Michael, Marano, Stefano, Wymeersch, Henk
Other Authors: Massachusetts Institute of Technology. Department of Aeronautics and Astronautics
Format: Article
Language:en_US
Published: Institute of Electrical and Electronics Engineers 2010
Online Access:http://hdl.handle.net/1721.1/59985
https://orcid.org/0000-0002-8573-0488
_version_ 1826207697283842048
author Win, Moe Z.
Gifford, Wesley Michael
Marano, Stefano
Wymeersch, Henk
author2 Massachusetts Institute of Technology. Department of Aeronautics and Astronautics
author_facet Massachusetts Institute of Technology. Department of Aeronautics and Astronautics
Win, Moe Z.
Gifford, Wesley Michael
Marano, Stefano
Wymeersch, Henk
author_sort Win, Moe Z.
collection MIT
description Ultra-wide bandwidth (UWB) transmission is a promising technology for indoor localization due to its fine delay resolution and obstacle-penetration capabilities. However, the presence of walls and other obstacles introduces a positive bias in distance estimates, severely degrading localization accuracy. We have performed an extensive indoor measurement campaign with FCC-compliant UWB radios to quantify the effect of non-line-of-sight (NLOS) propagation. Based on this campaign, we extract key features that allow us to distinguish between NLOS and LOS conditions. We then propose a nonparametric approach based on support vector machines for NLOS identification, and compare it with existing parametric (i.e., model-based) approaches. Finally, we evaluate the impact on localization through Monte Carlo simulation. Our results show that it is possible to improve positioning accuracy relying solely on the received UWB signal.
first_indexed 2024-09-23T13:53:33Z
format Article
id mit-1721.1/59985
institution Massachusetts Institute of Technology
language en_US
last_indexed 2024-09-23T13:53:33Z
publishDate 2010
publisher Institute of Electrical and Electronics Engineers
record_format dspace
spelling mit-1721.1/599852022-10-01T17:49:26Z Nonparametric obstruction detection for UWB localization Win, Moe Z. Gifford, Wesley Michael Marano, Stefano Wymeersch, Henk Massachusetts Institute of Technology. Department of Aeronautics and Astronautics Massachusetts Institute of Technology. Laboratory for Information and Decision Systems Win, Moe Z. Win, Moe Z. Gifford, Wesley Michael Ultra-wide bandwidth (UWB) transmission is a promising technology for indoor localization due to its fine delay resolution and obstacle-penetration capabilities. However, the presence of walls and other obstacles introduces a positive bias in distance estimates, severely degrading localization accuracy. We have performed an extensive indoor measurement campaign with FCC-compliant UWB radios to quantify the effect of non-line-of-sight (NLOS) propagation. Based on this campaign, we extract key features that allow us to distinguish between NLOS and LOS conditions. We then propose a nonparametric approach based on support vector machines for NLOS identification, and compare it with existing parametric (i.e., model-based) approaches. Finally, we evaluate the impact on localization through Monte Carlo simulation. Our results show that it is possible to improve positioning accuracy relying solely on the received UWB signal. National Science Foundation (U.S.) (ECCS-0636519) National Institutes of Health (U.S.) (ECCS-0901034) United States. Office of Naval Research (Presidential Early Career Award for Scientists and Engineers (PECASE) N00014- 09-1-0435) Defense University Research Instrumentation Program (U.S.) (Grant N00014-08-1-0826) MIT/Army Institute for Soldier Nanotechnologies 2010-11-12T20:56:04Z 2010-11-12T20:56:04Z 2010-03 2009-11 Article http://purl.org/eprint/type/ConferencePaper 978-1-4244-4148-8 1930-529X INSPEC Accession Number: 11171135 http://hdl.handle.net/1721.1/59985 Marano, S. et al. “Nonparametric Obstruction Detection for UWB Localization.” Global Telecommunications Conference, 2009. GLOBECOM 2009. IEEE. 2009. 1-6. ©2009 IEEE. https://orcid.org/0000-0002-8573-0488 en_US http://dx.doi.org/10.1109/GLOCOM.2009.5425460 IEEE Global Telecommunications Conference, 2009. GLOBECOM 2009 Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf Institute of Electrical and Electronics Engineers IEEE
spellingShingle Win, Moe Z.
Gifford, Wesley Michael
Marano, Stefano
Wymeersch, Henk
Nonparametric obstruction detection for UWB localization
title Nonparametric obstruction detection for UWB localization
title_full Nonparametric obstruction detection for UWB localization
title_fullStr Nonparametric obstruction detection for UWB localization
title_full_unstemmed Nonparametric obstruction detection for UWB localization
title_short Nonparametric obstruction detection for UWB localization
title_sort nonparametric obstruction detection for uwb localization
url http://hdl.handle.net/1721.1/59985
https://orcid.org/0000-0002-8573-0488
work_keys_str_mv AT winmoez nonparametricobstructiondetectionforuwblocalization
AT giffordwesleymichael nonparametricobstructiondetectionforuwblocalization
AT maranostefano nonparametricobstructiondetectionforuwblocalization
AT wymeerschhenk nonparametricobstructiondetectionforuwblocalization