title: Space magnetometer based on an anisotropic magnetoresistive hybrid sensor.
abstract: We report on the design and development of a low resource, dual sensor vector magnetometer for space science applications on very small spacecraft. It is based on a hybrid device combining an orthogonal triad of commercial anisotropic magnetoresistive (AMR) sensors with a totem pole H-Bridge drive on a ceramic substrate. The drive enables AMR operation in the more sensitive flipped mode and this is achieved without the need for current spike transmission down a sensor harness. The magnetometer has sensitivity of better than 3 nT in a 0-10 Hz band and a total mass of 104 g. Three instruments have been launched as part of the TRIO-CINEMA space weather mission, inter-calibration against the International Geomagnetic Reference Field model makes it possible to extract physical signals such as field-aligned current deflections of 20-60 nT within an approximately 45,000 nT ambient field.
authors.affiliation: Blackett Laboratory, Imperial College London, London SW7 2BW, United Kingdom.
authors.forename: P
authors.initials: P
authors.lastname: Brown
authors.affiliation: Blackett Laboratory, Imperial College London, London SW7 2BW, United Kingdom.
authors.forename: B J
authors.initials: BJ
authors.lastname: Whiteside
authors.affiliation: Blackett Laboratory, Imperial College London, London SW7 2BW, United Kingdom.
authors.forename: T J
authors.initials: TJ
authors.lastname: Beek
authors.affiliation: Blackett Laboratory, Imperial College London, London SW7 2BW, United Kingdom.
authors.forename: P
authors.initials: P
authors.lastname: Fox
authors.affiliation: Blackett Laboratory, Imperial College London, London SW7 2BW, United Kingdom.
authors.forename: T S
authors.initials: TS
authors.lastname: Horbury
authors.affiliation: Blackett Laboratory, Imperial College London, London SW7 2BW, United Kingdom.
authors.forename: T M
authors.initials: TM
authors.lastname: Oddy
authors.affiliation: Blackett Laboratory, Imperial College London, London SW7 2BW, United Kingdom.
authors.forename: M O
authors.initials: MO
authors.lastname: Archer
authors.affiliation: Blackett Laboratory, Imperial College London, London SW7 2BW, United Kingdom.
authors.forename: J P
authors.initials: JP
authors.lastname: Eastwood
authors.affiliation: EMM-NANO Consortium, K.U. Leuven, 3000 Leuven, Belgium.
authors.forename: D
authors.initials: D
authors.lastname: Sanz-Hernández
authors.affiliation: Space Sciences Laboratory, University of California, Berkeley, California 94720, USA.
authors.forename: J G
authors.initials: JG
authors.lastname: Sample
authors.affiliation: Blackett Laboratory, Imperial College London, London SW7 2BW, United Kingdom.
authors.forename: E
authors.initials: E
authors.lastname: Cupido
authors.affiliation: Blackett Laboratory, Imperial College London, London SW7 2BW, United Kingdom.
authors.forename: H
authors.initials: H
authors.lastname: O'Brien
authors.affiliation: Blackett Laboratory, Imperial College London, London SW7 2BW, United Kingdom.
authors.forename: C M
authors.initials: CM
authors.lastname: Carr