GP43C-1255
The Absolute Vector Magnetometers on Board Swarm, Lessons Learned From Two Years in Space.
Thursday, 17 December 2015
Poster Hall (Moscone South)
Gauthier Hulot1, Jean-Michel Leger2, Pierre Vigneron1, Laura Brocco1, Nils Olsen3, Thomas Jager2, Francois Bertrand2, Isabelle Fratter4, Olivier Sirol1 and Xavier Lalanne1, (1)Institut de Physique du Globe de Paris, Paris, France, (2)CEA-LETI, Grenoble, France, (3)Technical University of Denmark - Space, Kongens Lyngby, Denmark, (4)CNES French National Center for Space Studies, Toulouse Cedex 09, France
Abstract:
ESA's Swarm satellites carry 4He absolute magnetometers (ASM), designed by CEA-Léti and developed in partnership with CNES. These instruments are the first-ever space-born magnetometers to use a common sensor to simultaneously deliver 1Hz independent absolute scalar and vector readings of the magnetic field. They have provided the very high accuracy scalar field data nominally required by the mission (for both science and calibration purposes, since each satellite also carries a low noise high frequency fluxgate magnetometer designed by DTU), but also very useful experimental absolute vector data. In this presentation, we will report on the status of the instruments, as well as on the various tests and investigations carried out using these experimental data since launch in November 2013. In particular, we will illustrate the advantages of flying ASM instruments on space-born magnetic missions for nominal data quality checks, geomagnetic field modeling and science objectives.
