Geometric optics and diffraction techniques for data simulation in cross-borehole tomography

M. S. Frank, Constantine Balanis

Research output: Chapter in Book/Report/Conference proceedingConference contribution


The method of reconstructing a cross-sectional image of the earth between two boreholes can be used in areas from tunnel detection to mineral exploration. Of great importance to this underground reconstruction process is the ability to adequately model the forward (simulation) problem. The authors consider the simulation of continuous wave data using geometrical optics with first-order diffractions from impedance surface discontinuities. The ray optics method using diffraction from lossy wedges was shown to give good simulation results of the electromagnetic response of a high-conductivity square cylinder imbedded in a homogeneous earth. The results obtained for high-conductivity anomalies using ray optics compare favorably with those obtained using the volume current method (VCM). Additionally, the ray optics method sheds light on the effects of diffraction in cross-borehole tomography, thereby suggesting ways in which the inversion (reconstruction) process can be improved.

Original languageEnglish (US)
Title of host publicationDigest - International Geoscience and Remote Sensing Symposium (IGARSS)
Place of PublicationPiscataway, NJ, United States
PublisherPubl by IEEE
Number of pages2
StatePublished - 1988
EventIGARSS'88 - Remote Sensing: Moving towards the 21st Century - Edinburgh, UK
Duration: Sep 12 1988Sep 16 1988


OtherIGARSS'88 - Remote Sensing: Moving towards the 21st Century
CityEdinburgh, UK

ASJC Scopus subject areas

  • Engineering(all)


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