The Effect of Sensor Size on Axial Gradiometer Performance
Type of document
článek v časopisejournal article
Peer-reviewed
acceptedVersion
Author
Janošek M.
Platil A.
Vyhnánek J.
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The case of a finite base gradiometer with ideal sensors is considered, then influence of finite-size sensing elements is modeled and finally, comparison with experimental results obtained with two ring-core fluxgates and two AMR sensors are evaluated. Some of the effects found may be counterintuitive and especially in the close proximity of dipole source, the gradient cannot be further modeled by simplified uniaxial approximation because of the sensor size. Full Biot-Savart field model was considered in those cases.
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