A reflection model for ultrasonic position measurements for indoor aplications

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    Abstract

    An acoustic position measurement system is based on a time-of-flight (ToF) measurement of an acoustic tone burst. In indoor situations, the accuracy of the
    measurement is often affected by echoes generated by nearby objects around the measurement set-up. The problem how to model these echoes is addressed in the paper. Such a model is useful for the development of ToF measurement methods that can deal effectively with the echoes. The proposed model is a zero mean, non-stationary stochastic process statistically defined by its autocovariance function. We are able to specify this function by means of a few parameters. Experiments performed validate the proposed model. We show that the proposed autocovariance function and the one deduced from experimental data can approximately be brought in accordance.
    Original languageEnglish
    Title of host publicationXVII IMEKO World Congress : Metrology in the 3rd millennium
    Subtitle of host publicationBook of summaries: June 22-27, 2003 Dubrovnik, Croatia
    EditorsDamir Ilić, Mladen Boršić, Josip Butorac
    Place of PublicationDubrovnik, Croatia
    PublisherCroatian Metrology Society
    Number of pages6
    ISBN (Print)953-7124-00-2
    Publication statusPublished - 22 Jun 2003
    EventXVII IMEKO World Congress 2003: Metrology in the 3rd Millennium - Dubrovnik, Croatia
    Duration: 22 Jun 200327 Jun 2003
    Conference number: 17

    Conference

    ConferenceXVII IMEKO World Congress 2003
    CountryCroatia
    CityDubrovnik
    Period22/06/0327/06/03

    Keywords

    • Ultrasonic position measurement
    • Reflection model
    • Time-of-flight

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