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Impulsive Magnetic Anomaly Detection At the 100-m Scale With an Array of Induction Coil Magnetometers

Journal Article · · IEEE Sensors Letters
 [1];  [1];  [2];  [3];  [1]
  1. Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
  2. Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
  3. Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
+ Show Author Affiliations
We demonstrate magnetic anomaly detection (MAD) using an array of 24 commercial induction coil magnetometers with stand-off distances from a pulsed 99.8(3) kA·m2 magnetic dipole source of 260–1200 m. The sparse array is used to estimate the magnetic dipole location, magnitude, and orientation. We demonstrate how independent component analysis (ICA) improves the accuracy and precision of the magnetometer array when estimating the dipole parameters. Using sensor responses recorded from individual source pulses, we estimate the dipole location to within 29 ± 2 m, the magnitude to within 3 ± 3 kA·m2, and dipole orientation error to within 19 ± 0.6°.
Research Organization:
Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA), Office of Defense Nuclear Nonproliferation
Grant/Contract Number:
89233218CNA000001; AC05-76RL01830; AC52-07NA27344; NA0003525; NA0003624
OSTI ID:
2565188
Report Number(s):
SAND--2025-05443J
Journal Information:
IEEE Sensors Letters, Journal Name: IEEE Sensors Letters Journal Issue: 2 Vol. 9; ISSN 2475-1472
Publisher:
IEEECopyright Statement
Country of Publication:
United States
Language:
English

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