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首页> 外文期刊>Sensors Journal, IEEE >Principle and Performance of a Dual-Band Search Coil Magnetometer: A New Instrument to Investigate Fluctuating Magnetic Fields in Space
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Principle and Performance of a Dual-Band Search Coil Magnetometer: A New Instrument to Investigate Fluctuating Magnetic Fields in Space

机译：双频带搜索线圈磁力计的原理和性能：研究空间中波动磁场的新仪器

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摘要

Search-coil magnetometers are of common use in space physics thanks to their simplicity, robustness and ability to measure weak magnetic fields: their sensitivity can reach a few tens of fT/¿Hz in the range 10-100 kHz. The frequency band is grossly determined by the resonance of the coil. Simply adding a second coil does not efficiently extend the frequency band beyond the first resonance due to the mutual impedance of the two coils. We present a solution, called ¿mutual reducer,¿ which allows us to take full benefit of the second coil and efficiently extends the frequency band. The physical principle is described first, followed by a detailed presentation of this ¿dual-band search-coil¿ (DBSC) that will be part of the plasma wave instrument (PWI) onboard the Mercury magnetospheric orbiter (MMO) of the ESA-JAXA mission BepiColombo dedicated to the exploration of the plasma environment of planet Mercury.
机译：搜索线圈磁力计由于其简单性，鲁棒性和测量弱磁场的能力而在空间物理学中很常用：其灵敏度在10-100 kHz范围内可以达到数十fT /？Hz。频带主要由线圈的谐振决定。由于两个线圈的相互阻抗，简单地添加第二线圈不能有效地将频带扩展到超过第一谐振。我们提出了一种称为“相互减速器”的解决方案，该解决方案使我们能够充分利用第二个线圈并有效地扩展频带。首先介绍了物理原理，然后详细介绍了这种“双频带搜索线圈”（DBSC），它将成为ESA-的水银磁层轨道器（MMO）上等离子仪器（PWI）的一部分JAXA任务BepiColombo致力于探索水星行星的等离子体环境。

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