Non-linear inversion of controlled source multi-receiver electromagnetic induction data for unexploded ordnance using a continuation method Academic Article

abstract

• This work adopts a continuation approach, based on path tracking in model space, to solve the non-linear least-squares problem for discrimination of unexploded ordnance (UXO) using multi-receiver electromagnetic induction (EMI) data. The forward model corresponds to a stretched-exponential decay of eddy currents induced in a magnetic spheroid. We formulate an over-determined, or under-parameterized, inverse problem. An example using synthetic multi-receiver EMI responses illustrates the efficiency of the method. The fast inversion of actual field multi-receiver EMI responses of inert, buried ordnances is also shown. Software based on the continuation method could be installed within a multi-receiver EMI sensor and used for near-real-time UXO decision-making purposes without the need for a highly-trained operator. 2006 Elsevier B.V. All rights reserved.

authors

• Everett, Mark

published proceedings

• JOURNAL OF APPLIED GEOPHYSICS

author list (cited authors)

• Benavides, A., & Everett, M. E.

citation count

• 7

complete list of authors

• Benavides, A||Everett, ME

publication date

• January 2007

publisher

• Elsevier  Publisher

published in

• Journal of Applied Geophysics  Journal

keywords

• Data Processing
• Electromagnetic Induction
• Homotopy
• Inversion
• Near-surface Geophysics
• Unexploded Ordnance

Digital Object Identifier (DOI)

• 10.1016/j.jappgeo.2006.06.006

start page

• 243

end page

• 253

volume

• 61

issue

• 3-4

URL

• http%3A%2F%2Fdx.doi.org%2F10.1016%2Fj.jappgeo.2006.06.006