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Three-dimensional subterranean target identification by use of optimization techniques

Björkberg, Jonas and Kristensson, Gerhard LU (1991) In Technical Report LUTEDX/(TEAT-7013)/1-20/(1991)
Abstract
The identification of a subterranean metallic ore from scattering experiments,

conducted on the surface of the ground or in a bore hole, is a classic geophysical

problem. In general this problem is not well-posed. However, a priori

information about the shape of the target provides enough regularization to

make the problem numerically stable. The problem is solved by minimizing

the mean-square error between an eleven parameter model, based on the

null field approach, and the data. The optimization is done with a Newton

technique in which a singular value decomposition of the model Jacobian is

employed. The algorithm is very stable to noise and makes good... (More)
The identification of a subterranean metallic ore from scattering experiments,

conducted on the surface of the ground or in a bore hole, is a classic geophysical

problem. In general this problem is not well-posed. However, a priori

information about the shape of the target provides enough regularization to

make the problem numerically stable. The problem is solved by minimizing

the mean-square error between an eleven parameter model, based on the

null field approach, and the data. The optimization is done with a Newton

technique in which a singular value decomposition of the model Jacobian is

employed. The algorithm is very stable to noise and makes good reconstructions

from feasible starting guesses, for realistically noise contaminated data. (Less)
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author
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organization
publishing date
type
Book/Report
publication status
published
subject
in
Technical Report LUTEDX/(TEAT-7013)/1-20/(1991)
pages
20 pages
publisher
[Publisher information missing]
report number
TEAT-7013
language
English
LU publication?
yes
additional info
Published version: Electromagnetic Waves PIER 15, Ed. J.A. Kong, pp. 141-164, EMW Publishing, Cambridge, Massachusetts, USA, 1997.
id
23af1402-87da-44c3-9568-2a4450c998cd (old id 530201)
date added to LUP
2016-04-04 14:31:49
date last changed
2018-11-21 21:20:51
@techreport{23af1402-87da-44c3-9568-2a4450c998cd,
  abstract     = {{The identification of a subterranean metallic ore from scattering experiments,<br/><br>
conducted on the surface of the ground or in a bore hole, is a classic geophysical<br/><br>
problem. In general this problem is not well-posed. However, a priori<br/><br>
information about the shape of the target provides enough regularization to<br/><br>
make the problem numerically stable. The problem is solved by minimizing<br/><br>
the mean-square error between an eleven parameter model, based on the<br/><br>
null field approach, and the data. The optimization is done with a Newton<br/><br>
technique in which a singular value decomposition of the model Jacobian is<br/><br>
employed. The algorithm is very stable to noise and makes good reconstructions<br/><br>
from feasible starting guesses, for realistically noise contaminated data.}},
  author       = {{Björkberg, Jonas and Kristensson, Gerhard}},
  institution  = {{[Publisher information missing]}},
  language     = {{eng}},
  number       = {{TEAT-7013}},
  series       = {{Technical Report LUTEDX/(TEAT-7013)/1-20/(1991)}},
  title        = {{Three-dimensional subterranean target identification by use of optimization techniques}},
  url          = {{https://lup.lub.lu.se/search/files/6381456/624844.pdf}},
  year         = {{1991}},
}