### 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 language | English |
---|---|

Place of Publication | Espoo |

Publisher | VTT Technical Research Centre of Finland |

Number of pages | 50 |

ISBN (Print) | 951-38-2630-9 |

Publication status | Published - 1986 |

MoE publication type | D4 Published development or research report or study |

### Publication series

Series | Valtion teknillinen tutkimuskeskus. Tiedotteita |
---|---|

Number | 597 |

ISSN | 0358-5085 |

### Keywords

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

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## 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*. VTT Technical Research Centre of Finland. Valtion teknillinen tutkimuskeskus. Tiedotteita, No. 597