Characterization and detection of oscillating magnetic dipole signals

Tsuriel Ram-Cohen, Roger Alimi, Eyal Weiss, Zeev Zalevsky

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

The present paper deals with the problem of characterization of oscillating magnetic dipole (OMD) signals and the development of a suitable magnetic anomaly detection (MAD) algorithm for it. The resulting outcomes of investigating the above mentioned problem are: (1) a development of a complete model of the noise and the signal based on a non-linear gravity pendulum model. This model was compared and verified against real world magnetic signals, as well as simulated ones. (2) A detection algorithm that utilizes this model by whitening the noise and seeking for periodical features in the signal. The developed algorithm has high noise immunity with high detection probabilities even at as low SNR as -10 dB. Compared to benchmark detectors, our detection scheme offers performance improved by 5-10 dB. Moreover, when testing the detector against real world signals, the SNR difference in respect to the performance predicted by the simulations was less than 2.5 dB.

Original languageEnglish
Article number045104
JournalMeasurement Science and Technology
Volume28
Issue number4
DOIs
StatePublished - Apr 2017

Bibliographical note

Publisher Copyright:
© 2017 IOP Publishing Ltd.

Keywords

  • comb filter
  • magnetic anomaly detection (MAD)
  • oscillating magnetic dipole (OMD)
  • remote sensing
  • whitening filter

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