Subsurface discrimination using electromagnetic induction sensors
- 1 June 2001
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Geoscience and Remote Sensing
- Vol. 39 (6), 1286-1293
- https://doi.org/10.1109/36.927451
Abstract
This paper reviews the problem of subsurface discrimination using electromagnetic induction (EMI) sensors. Typically, discrimination is based on differences in the multiaxis magnetic polarizability between different objects. They review work on frequency and time domain systems, and their interrelationship. They present the results of comprehensive measurements of the multiaxis EMI response of a variety of inert ordnance items, ordnance fragments, and scrap metal pieces recovered from firing ranges. The extent to which the distributions of the eigenvalues of magnetic polarizability for the different classes of objects do not overlap establishes an upper bound on discrimination. For various reasons, the eigenvalues cannot always be accurately determined using data collected above a buried target. This tends to increase the overlap of the distributions, and hence degrade discrimination performance.Keywords
This publication has 3 references indexed in Scilit:
- Model-based characterization of electromagnetic induction signatures obtained with the MTADS electromagnetic arrayIEEE Transactions on Geoscience and Remote Sensing, 2001
- Simple phenomenological models for wideband frequency-domain electromagnetic inductionIEEE Transactions on Geoscience and Remote Sensing, 2001
- Locating and Determining Dimensionality of UXOs Using Time Domain Electromagnetic InductionPublished by Society of Exploration Geophysicists ,1999