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    Pervasive randomness in physics: an introduction to its modelling and spectral characterisation

    Access Status
    Fulltext not available
    Authors
    Howard, Roy
    Date
    2017
    Type
    Journal Article
    
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    Citation
    Howard, R. 2017. Pervasive randomness in physics: an introduction to its modelling and spectral characterisation. Contemporary Physics. 58 (4): pp. 303-330.
    Source Title
    Contemporary Physics
    DOI
    10.1080/00107514.2017.1359911
    ISSN
    0010-7514
    School
    Department of Electrical and Computer Engineering
    URI
    http://hdl.handle.net/20.500.11937/57696
    Collection
    • Curtin Research Publications
    Abstract

    © 2017 Informa UK Limited, trading as Taylor & Francis Group. An introduction to the modelling and spectral characterisation of random phenomena is detailed at a level consistent with a first exposure to the subject at an undergraduate level. A signal framework for defining a random process is provided and this underpins an introduction to common random processes including the Poisson point process, the random walk, the random telegraph signal, shot noise, information signalling random processes, jittered pulse trains, birth–death random processes and Markov chains. An introduction to the spectral characterisation of signals and random processes, via either an energy spectral density or a power spectral density, is detailed. The important case of defining a white noise random process concludes the paper.

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