Calculation of electromagnetic field components in frequency and time domain using dipole source excitation and layered earth model: Documentation of software development

Juhani Korkealaakso, Pauli Saksa

    Research output: Book/ReportReport

    Abstract

    The completely generalized program that calculates the mutual coupling ratios of two loops over an n-layer earth model in four coil configuration (horizontal coplanar, perpendicular, vertical coplanar and ver-tical coaxial) systems has been modified to take advantage of a digital linear filter method. This method rapidly evaluates the many Hankel transform integrals encountered in layered earth electromagnetic modelling. The program is valid for any frequency, coil separation or coil altitude and any resistivities, dielectric constants and relative magnetic permeabilities of the layers. Applying this rapid and thus inexpensive method it has also been possible to develop a computer program that calculates the time domain electromagnetic response of a multilayered earth for the Crone PEM dipole system. The conversion into the time domain involves Fourier series summation of the matched complex mutual coupling ratios of the layered earth models computed by the digital linear filter method.
    Original languageEnglish
    Place of PublicationEspoo
    PublisherVTT Technical Research Centre of Finland
    Number of pages50
    ISBN (Print)951-38-2630-9
    Publication statusPublished - 1986
    MoE publication typeD4 Published development or research report or study

    Publication series

    SeriesValtion teknillinen tutkimuskeskus. Tiedotteita
    Number597
    ISSN0358-5085

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    Keywords

    • geophysics
    • environmental surveys
    • municipal engineering
    • landfills
    • leachate
    • monitoring

    Cite this

    Korkealaakso, J., & Saksa, P. (1986). Calculation of electromagnetic field components in frequency and time domain using dipole source excitation and layered earth model: Documentation of software development. Espoo: VTT Technical Research Centre of Finland. Valtion teknillinen tutkimuskeskus. Tiedotteita, No. 597