Detail publikace

Noise Infuence of Magnetic Field to Conductivity Image Reconstruction

Originální název

Noise Infuence of Magnetic Field to Conductivity Image Reconstruction

Anglický název

Noise Infuence of Magnetic Field to Conductivity Image Reconstruction

Jazyk

en

Originální abstrakt

The paper presents a conductivity calculation from values of the magnetic flux density measured outside the specimen. There is described the analysis of the noise influence that is presented in the measured values of a magnetic field. A conductivity calculation is based on the electrical impedance tomography (EIT) algorithm. The standard EIT exploited measured voltage values on electrodes placed at specimen boundaries to a conductivity calculation. The direct current source or the low frequency current source is connected to a specimen. A conductivity calculation is based on a minimizing of a suitable objective function. The least squares method is very often used for a minimization of an objective function. The Tikhonov regularization method is used in order to ensure the stability of an algorithm. The stability and the accuracy are dependent on an accuracy of measured voltage values.

Anglický abstrakt

The paper presents a conductivity calculation from values of the magnetic flux density measured outside the specimen. There is described the analysis of the noise influence that is presented in the measured values of a magnetic field. A conductivity calculation is based on the electrical impedance tomography (EIT) algorithm. The standard EIT exploited measured voltage values on electrodes placed at specimen boundaries to a conductivity calculation. The direct current source or the low frequency current source is connected to a specimen. A conductivity calculation is based on a minimizing of a suitable objective function. The least squares method is very often used for a minimization of an objective function. The Tikhonov regularization method is used in order to ensure the stability of an algorithm. The stability and the accuracy are dependent on an accuracy of measured voltage values.

BibTex


@inproceedings{BUT94742,
  author="Tomáš {Kříž}",
  title="Noise Infuence of Magnetic Field to Conductivity Image Reconstruction",
  annote="The paper presents a conductivity calculation from values of the magnetic flux
density measured outside the specimen. There is described the analysis of the noise influence that
is presented in the measured values of a magnetic field. A conductivity calculation is based on the
electrical impedance tomography (EIT) algorithm. The standard EIT exploited measured voltage
values on electrodes placed at specimen boundaries to a conductivity calculation. The direct
current source or the low frequency current source is connected to a specimen. A conductivity
calculation is based on a minimizing of a suitable objective function. The least squares method
is very often used for a minimization of an objective function. The Tikhonov regularization
method is used in order to ensure the stability of an algorithm. The stability and the accuracy
are dependent on an accuracy of measured voltage values.",
  address="The Electromagnetic Academy",
  booktitle="Proceedings of PIERS 2012 MOSCOW",
  chapter="94742",
  howpublished="electronic, physical medium",
  institution="The Electromagnetic Academy",
  year="2012",
  month="august",
  pages="271--275",
  publisher="The Electromagnetic Academy",
  type="conference paper"
}