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

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.

author list (cited authors)

  • Benavides, A., & Everett, M. E.

citation count

  • 7

publication date

  • March 2007