SGER: Field-Test of a Prototype Giant Magneto-Impedance (GMI) Magnetometer

SGER：原型巨磁阻抗 (GMI) 磁力计的现场测试

• 批准号: 0649818
• 负责人: Joshua Semeter
• 金额: $ 5万
• 依托单位: Trustees of Boston University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-10-01 至 2007-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0649818&HistoricalAwards=false
• 关键词: SGER; Field; Test; Prototype; Giant

This will build and field-test of prototype of a new class of 3-axis vector magnetometers for geophysical research. This new class of magnetometers is based on the giant magneto-impedance (GMI) effect. GMI magnetometers are now prevalent in manufacturing applications, the automotive industry, and even cell phones but they have not been adapted to the needs of geophysical research. The advantage of a magnetometer based on the GMI effect is that it can be made much smaller than current fluxgate magnetometers and would use much less power to operate. In addition, it is likely that GMI-based magnetometers could be manufactured at a much smaller cost than precision fluxgate magnetometers. The introduction of a cheap, reproducible, low-power alternative to standard fluxgate magnetometers will pave the way for a dense global network of scientific magnetometers, enabling a major improvement in the scientific efficacy of ground-based sensors for the study of magnetospheric phenomena. This project will take a first critical step in adapting GMI technology for geophysical research. The scope of the project includes (1) building a suitable housing and platform for a prototype device, (2) developing basic data acquisition software, (3) field-testing the instrument in the auroral zone alongside an existing fluxgate magnetometer, and (4) reducing the data in order to perform a comparative evaluation of the suitability of GMI technology for ground-based investigations of magnetospheric phenomena. The GMI sensor is adapted from a sensor developed for deep sea applications under a collaborative effort between Boston University and MTI Limited (Mystic, CT). The field-test of the sensor will take place in Fairbanks, Alaska, where comparisons can be made with the Poker Flat magnetometer, which is part of the Geophysical Institute Magnetometer Array, as well as ancillary radio and optical diagnostics, including those associated with the Advanced Modular Incoherent Scatter Radar (AMISR) facility.

这将用于地球物理研究的新型三轴矢量磁力仪样机的建造和现场测试。这种新型磁强计是基于巨磁阻抗效应的。GMI磁强计现在广泛应用于制造业、汽车工业，甚至手机，但它们还不能适应地球物理研究的需要。基于GMI效应的磁强计的优点是它可以比目前的磁通门磁力计小得多，并且运行时使用的功率要少得多。此外，基于GMI的磁强计的制造成本可能比精密磁通门磁强计低得多。采用廉价、可重复、低功率的磁通门磁强计替代标准磁通门磁强计，将为建立一个密集的全球科学磁强计网络铺平道路，从而大大提高用于研究磁层现象的地面传感器的科学效能。该项目将为将GMI技术应用于地球物理研究迈出关键的第一步。该项目的范围包括：(1)为原型装置建造一个合适的外壳和平台，(2)开发基本的数据采集软件，(3)在极光区与现有的磁通门磁力仪一起对该仪器进行实地测试，以及(4)减少数据，以便对GMI技术对磁层现象地面调查的适宜性进行比较评估。GMI传感器改装自波士顿大学和MTI有限公司(康涅狄格州迈斯特)合作开发的深海应用传感器。传感器的实地测试将在阿拉斯加的费尔班克斯进行，在那里可以与作为地球物理研究所磁强计阵列一部分的扑克平板磁强计以及辅助无线电和光学诊断进行比较，包括与高级模块化非相干散射雷达设施有关的诊断。