Spatial deconvolution algorithm for superconducting planar gradiometer arrays

Author

Bruno, A.C. ; Ribeiro, P. Costa

Author_Institution

Dept. of Phys., Pontificia Univ. Catolica, Rio de Janeiro, Brazil

Volume

25

Issue

2

fYear

1989

fDate

3/1/1989 12:00:00 AM

Firstpage

1219

Lastpage

1222

Abstract

A digital filter model used previously to describe axial gradiometers is used to study arrays of planar first-order gradiometers. As an application of this technique, a spatial deconvolution algorithm is developed to recover the input field from the output measurements. The influence of parameters such as source depth and the gradiometer array density is investigated by means of computer simulations. With properly designed array the input flux was recovered with errors between 3% and 12%. This provided a contour plot quite similar to the one that would be obtained if the source were detected with a single-loop coil array

Keywords

magnetometers; superconducting junction devices; array density; contour plot; digital filter model; input field; input flux; planar first-order gradiometers; source depth; spatial deconvolution algorithm; superconducting planar gradiometer arrays; Biomagnetics; Coils; Deconvolution; Digital filters; Magnetic field measurement; SQUIDs; Sensor arrays; Spatial filters; Superconducting filters; Transfer functions;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.92515

Filename

92515