A null-field method for estimating underground position

Clayton P. Davis, Weng Cho Chew, W. W. Tucker, P. R. Atkins

Research output: Contribution to journalArticlepeer-review


The geometric characteristics of low-frequency magnetic dipole fields and their relative insensitivity to the host media have made low-frequency coils useful for underground geolocation. A robust and succinct method is presented for converting dipole field measurements into estimates of receiver position. A noisy half-space model of the Earth is used to model the receiving environment. A perfectly conducting sphere immersed in a homogeneous conducting background is used to study the localized effects of buried metals.

Original languageEnglish (US)
Article number4686010
Pages (from-to)3731-3738
Number of pages8
JournalIEEE Transactions on Geoscience and Remote Sensing
Issue number11
StatePublished - Nov 2008


  • Half-space
  • Loop antennas
  • Magnetic dipoles

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Earth and Planetary Sciences(all)

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