Influence of Sensor Variations on the Condition of the Magnetostatic Linear Inverse Problem

被引：8
|
作者：
Eichardt, Roland [1 ,2 ]
Haueisen, Jens [1 ,2 ]
机构：
[1] Ilmenau Univ Technol, Inst Biomed Engn & Informat, D-98684 Ilmenau, Germany
[2] Jena Univ Hosp, Dept Neurol, Biomagnet Ctr, D-07747 Jena, Germany
来源：
IEEE TRANSACTIONS ON MAGNETICS | 2010年 / 46卷 / 08期
关键词：
Condition number; linear inverse problem; magnetostatic; optimization of sensor arrays; sensor variations; OPTIMIZATION; LOCALIZATION; LOCATION;
D O I：
10.1109/TMAG.2010.2046149
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We examine the influence of randomized variations of the sensor directions on the condition of the linear inverse problem in magnetostatics. Sensor arrays with varied sensor directions are compared with arrays using perfectly in parallel aligned sensors. As evaluation criterion the condition number of the related lead field matrix is used. The results reveal that for mono-axial sensor arrays the condition of the linear inverse problem can be considerably improved, when sensors are directed non-uniformly. Furthermore, our findings indicate that also small variations of the sensor Z-positions of planar mono-axial arrays can lead to a better condition.
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页码：3449 / 3452
页数：4
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