Noise Compensation of a Mobile LTS SQUID Planar Gradiometer for Aeromagnetic Detection
Noise Compensation of a Mobile LTS SQUID Planar Gradiometer for Aeromagnetic Detection
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用于航磁探测的移动式 LTS SQUID 平面梯度仪的噪声补偿
DOI：
10.1109/tasc.2019.2945248
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发表时间：
2019-10
影响因子：
1.8
通讯作者：
Quan Tao
中科院分区：
文献类型：
--
作者：
Zhengwei Song;Yifeng Pei;Shulin Zhang;Xiaoming Xie;Haibin Dai;Liangliang Rong;Hui Dong;Jun Wu;Longqing Qiu;Guofeng Zhang;Yongliang Wang;Quan Tao
超导量子干涉器件（SQUID）平面梯度仪是一种非常灵敏的磁梯度测量传感器。它已被证明在航磁探测方面有潜在的应用。在实际环境中操作航磁SQUID系统的主要挑战是运动噪声，包括由梯度计不平衡和磁干扰引起的固有响应。通常采用三个正交的参考磁力计来改善梯度计的平衡。然而，来自系统本身的磁干扰也需要进行补偿。本文从传统的磁场总补偿法出发，建立了梯度仪检测运动噪声的数学模型。基于该模型，三轴磁强计的信号也可以用来补偿涡流对磁干扰的贡献。为了验证补偿方法的有效性，建立了SQUID平面梯度仪系统，并进行了飞行试验。在实验室测量了自制梯度仪的梯度场噪声和不平衡为100 fT/m/rt（Hz）和2E-4。在飞行中，梯度仪的运动诱导峰对峰输出从170 nT/m减小到约0.1 nT/m，从而清晰识别出来自货船的约2 nT/m的磁异常信号。
A superconducting quantum interference device (SQUID) planar gradiometer is an extremely sensitive sensor for magnetic gradient measurements. It has been shown to have potential applications for aeromagnetic detection. The major challenge when operating an aeromagnetic SQUID system in actual environment is the motion noise, including the inherent response resulting from gradiometer imbalance and from magnetic interferences. Three orthogonal reference magnetometers are usually adopted to improve the gradiometer balance. However, magnetic interference coming from the system itself also needs to be compensated. In this article, a mathematical model of the motion noise picked up by the gradiometer is derived from the traditional magnetic total field compensation method. Based on the model, the signals from the triaxial magnetometer can also be used to compensate the eddy current contribution to the magnetic interference. To verify the compensation method, a SQUID planar gradiometer system was set up and used for flight trials. The gradient field noise and imbalance of our homemade gradiometer were measured to be 100 fT/m/rt(Hz) and 2E-4 in the lab. In flight, the motion-induced peak-to-peak output of the gradiometer was reduced from 170 to about 0.1 nT/m, so that a magnetic anomaly signal of about 2 nT/m from a cargo ship was clearly recognized.
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DOI：
10.1002/pssc.200460832
发表时间：
2005-03
期刊：
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影响因子：
--
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H. Meyer;R. Stolz;A. Chwala;M. Schulz
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H. Meyer;R. Stolz;A. Chwala;M. Schulz
DOI：
10.1190/segam2016-13850871.1
发表时间：
2016
期刊：
Seg Technical Program Expanded Abstracts
影响因子：
--
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Wu Jun;Xie Xiaoming
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Wu Jun;Xie Xiaoming
DOI：
10.1071/aseg2012ab296
发表时间：
2012-12
期刊：
ASEG Extended Abstracts
影响因子：
--
作者：
A. Chwala;R. Stolz;V. Zakosarenko;L. Fritzsch;M. Schulz;A. Rompel;L. Polomé;M. Meyer;H. Meyer
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A. Chwala;R. Stolz;V. Zakosarenko;L. Fritzsch;M. Schulz;A. Rompel;L. Polomé;M. Meyer;H. Meyer
DOI：
10.1002/9783527609956.ch14
发表时间：
2006-12
期刊：
--
影响因子：
--
作者：
T. Clem;C. Foley;M. Keene
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T. Clem;C. Foley;M. Keene
DOI：
10.1190/gem2015-021
发表时间：
2015-04
期刊：
--
影响因子：
--
作者：
Y. Zou;Xiaohong Meng;Lianghui Guo;Xingdong Zhang;C. Xiu
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Y. Zou;Xiaohong Meng;Lianghui Guo;Xingdong Zhang;C. Xiu