This paper reviews the problem of subsurface discrimination using electromagnetic induction sensors. Typically, discrimination is based on differences in the multiaxis magnetic polarizability between different objects. We review work on frequency and time domain systems, and their interrelationship. We present the results of comprehensive measurements of the multiaxis electromagnetic induction response of a variety of inert ordnance items, ordnance fragments and scrap metal pieces recovered from firing ranges. The extent to which the distributions of the eigenvalues of magnetic polarizability for the different classes of objects do not overlap establishes an upper bound on discrimination. For various reasons, the eigenvalues cannot always be accurately determined using data collected above a buried target. This tends to increase the overlap of the distributions, and hence degrade discrimination performance.


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    Title :

    Subsurface discrimination using electromagnetic induction sensors


    Contributors:
    Bell, T.H. (author) / Barrow, B.J. (author) / Miller, J.M. (author)


    Publication date :

    2000


    Size :

    10 Seiten, 7 Quellen




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Subsurface discrimination using electromagnetic induction sensors (Invited Paper) [4129-15]

    Bell, T. H. / Barrow, B. J. / Miller, J. M. et al. | British Library Conference Proceedings | 2000




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