Optimization of a Third-ORder Gradiometer for Operation in Unshielded Environments

S. Uzunbajakau, A.P. Rijpma, Hermanus J.M. ter Brake, M.J. Peters

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

The optimum geometry of a third-order gradiometer for operation in unshielded environments is discussed. The optimization result depends on the specific signal and noise conditions. The fetal heart is considered as an example of the signal source. We optimized the gradiometer such that the signal-to-noise ratio is maximized in an averaged sense for all relevant environmental noise conditions and distances to the signal source. The resulting design consists of two second-order gradiometers that can be combined to form a third-order gradiometer in noisy environments, whereas a single second-order gradiometer can be used in low-noise environments. The gradiometer can provide the signal-to-noise ratio that allows detection of fetal heart signals in all relevant environmental noise conditions.
Original languageUndefined
Pages (from-to)3879-3885
Number of pages7
JournalIEEE transactions on applied superconductivity
Volume15
Issue number3
DOIs
Publication statusPublished - 2005

Keywords

  • IR-52763
  • METIS-224494

Cite this

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abstract = "The optimum geometry of a third-order gradiometer for operation in unshielded environments is discussed. The optimization result depends on the specific signal and noise conditions. The fetal heart is considered as an example of the signal source. We optimized the gradiometer such that the signal-to-noise ratio is maximized in an averaged sense for all relevant environmental noise conditions and distances to the signal source. The resulting design consists of two second-order gradiometers that can be combined to form a third-order gradiometer in noisy environments, whereas a single second-order gradiometer can be used in low-noise environments. The gradiometer can provide the signal-to-noise ratio that allows detection of fetal heart signals in all relevant environmental noise conditions.",
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Optimization of a Third-ORder Gradiometer for Operation in Unshielded Environments. / Uzunbajakau, S.; Rijpma, A.P.; ter Brake, Hermanus J.M.; Peters, M.J.

In: IEEE transactions on applied superconductivity, Vol. 15, No. 3, 2005, p. 3879-3885.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Optimization of a Third-ORder Gradiometer for Operation in Unshielded Environments

AU - Uzunbajakau, S.

AU - Rijpma, A.P.

AU - ter Brake, Hermanus J.M.

AU - Peters, M.J.

PY - 2005

Y1 - 2005

N2 - The optimum geometry of a third-order gradiometer for operation in unshielded environments is discussed. The optimization result depends on the specific signal and noise conditions. The fetal heart is considered as an example of the signal source. We optimized the gradiometer such that the signal-to-noise ratio is maximized in an averaged sense for all relevant environmental noise conditions and distances to the signal source. The resulting design consists of two second-order gradiometers that can be combined to form a third-order gradiometer in noisy environments, whereas a single second-order gradiometer can be used in low-noise environments. The gradiometer can provide the signal-to-noise ratio that allows detection of fetal heart signals in all relevant environmental noise conditions.

AB - The optimum geometry of a third-order gradiometer for operation in unshielded environments is discussed. The optimization result depends on the specific signal and noise conditions. The fetal heart is considered as an example of the signal source. We optimized the gradiometer such that the signal-to-noise ratio is maximized in an averaged sense for all relevant environmental noise conditions and distances to the signal source. The resulting design consists of two second-order gradiometers that can be combined to form a third-order gradiometer in noisy environments, whereas a single second-order gradiometer can be used in low-noise environments. The gradiometer can provide the signal-to-noise ratio that allows detection of fetal heart signals in all relevant environmental noise conditions.

KW - IR-52763

KW - METIS-224494

U2 - 10.1109/TASC.2005.854300

DO - 10.1109/TASC.2005.854300

M3 - Article

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SP - 3879

EP - 3885

JO - IEEE transactions on applied superconductivity

JF - IEEE transactions on applied superconductivity

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