Compact magnetic gradiometer and its astatization

被引：1

作者：

Janosek, Michal ^{[1
]}

Vyhnanek, Jan ^{[1
]}

Platil, Antonin ^{[1
]}

机构：

[1] Czech Tech Univ, Tech 2, Prague 16627, Czech Republic

来源：

EUROSENSORS 2015 | 2015年 / 120卷

关键词：

gradiometer; astatization; noise; fluxgate;

D O I：

10.1016/j.proeng.2015.08.841

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present a compact (10-cm head size, 3-cm base) axial magnetic gradiometer with a method of its astatization (i.e. suppression of false response to homogeneous field). For astatization, we use two integrated orthogonal sensors and a second -order polynomial correction; after astatization the gradiometer error is suppressed more than 1000x. The gradiometer has been successfully used in a real -world metal -detection task which was allowed by the low gradiometer astatization error of 50 nT/m and its noise of 1 nT/(m root Hz) @ 1 Hz. (C) 2015 article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-ric-nd/4.0/) Peer-review under responsibility of the organizing committee of EUROSENSORS The Authors. Published by Elsevier Ltd. This is an open access

引用

页码：1249 / 1252

页数：4

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