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A Novel Broadband Ultrasonic Location System

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UbiComp 2002: Ubiquitous Computing (UbiComp 2002)

Part of the book series: Lecture Notes in Computer Science ((LNCS,volume 2498))

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Abstract

Indoor ultrasonic location systems provide fine-grained position data to ubiquitous computing applications. However, the ultrasonic location systems previously developed utilize narrowband transducers, and thus perform poorly in the presence of noise and are constrained by the fact that signal collisions must be avoided. In this paper, we present a novel ultrasonic location system which utilizes broadband transducers. We describe the transmitter and receiver hardware, and characterize the ultrasonic channel bandwidth. The system has been deployed as a polled, centralized location system in an office. Test results demonstrate that the system can function in high levels of environmental noise, and that it has the capability for higher update rates than previous ultrasonic location systems.

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Author information

Authors and Affiliations

  1. Laboratory for Communications Engineering, University of Cambridge, UK

    Mike Hazas & Andy Ward

Authors
  1. Mike Hazas
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  2. Andy Ward
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Editor information

Editors and Affiliations

  1. Department of Computer Science and Engineering, University of Washington, 98195, Seattle, Washington, USA

    Gaetano Borriello

  2. Intel Research Seattle, 98105, Seattle, Washington, USA

    Gaetano Borriello

  3. Future Applications Lab, Viktoria Institute, Box 620, 40530, Göteborg, Sweden

    Lars Erik Holmquist

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© 2002 Springer-Verlag Berlin Heidelberg

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Hazas, M., Ward, A. (2002). A Novel Broadband Ultrasonic Location System. In: Borriello, G., Holmquist, L.E. (eds) UbiComp 2002: Ubiquitous Computing. UbiComp 2002. Lecture Notes in Computer Science, vol 2498. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-45809-3_21

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  • DOI: https://doi.org/10.1007/3-540-45809-3_21

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-44267-7

  • Online ISBN: 978-3-540-45809-8

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