2026-08-05T10:06:05Zhttp://doidb.wdc-terra.org/oaip/oai

oai:doidb.wdc-terra.org:67522026-06-10T10:01:44ZDOIDBDOIDB.GFZ

false4DOIDB.GFZ 10.5880/GFZ.2.3.2019.004 Rother, Martin Martin Rother 0009-0007-0355-8551 GFZ German Research Centre for Geosciences, Potsdam, Germany Rauberg, Jan Jan Rauberg 0000-0002-7752-9960 GFZ German Research Centre for Geosciences, Potsdam, Germany Michaelis, Ingo Ingo Michaelis 0000-0001-9741-4063 GFZ German Research Centre for Geosciences, Potsdam, Germany GFZ Data Services 2019 CHAMP magnetic field time series combined product level 3 Earth Observation Satellites > CHAMP Earth Remote Sensing Instruments > Passive Remote Sensing > Magnetic Field/Electric Field Instruments > MAGNETOMETERS Earth Remote Sensing Instruments > Passive Remote Sensing > Positioning/Navigation > ACS EARTH SCIENCE > SOLID EARTH > GEOMAGNETISM > MAGNETIC FIELD Solar/Space Observing Instruments > Magnetic Field/Electric Field Instruments > FGM Rother, Martin Martin Rother 0009-0007-0355-8551 GFZ German Research Centre for Geosciences, Potsdam, Germany Rauberg, Jan Jan Rauberg 0000-0002-7752-9960 GFZ German Research Centre for Geosciences, Potsdam, Germany Michaelis, Ingo Ingo Michaelis 0000-0001-9741-4063 GFZ German Research Centre for Geosciences, Potsdam, Germany Rauberg, Jan Jan Rauberg GFZ German Research Centre for Geosciences, Potsdam, Germany Stolle, Claudia GFZ German Research Centre for Geosciences, Potsdam, Germany Stolle, Claudia GFZ German Research Centre for Geosciences, Potsdam, Germany 2000/2010 Dataset 10.2312/GFZ.b103-19104 https://isdc.gfz-potsdam.de/champ-isdc/ CC BY 4.0 This is a Level 3 data daily file product from various scientific and utility sensors on board of the `LEO' satellite 'CHAMP' with magnetic field data given by a time resolution of 1 Hz. Thise Level 3 data type is build to hold and merge finally corrected data, focusing on mature data calibration and corrections -- as well as internal consistency. This Level 3 data product is intended to supersede the various Level 2 versions with calibrated magnetic field readings from the CHAMP mission distributed hitherto and should be fitted for scientific use, assembling time series of scalar magnetic field values (but not directly readings from the scalar Overhauser sensor), vector magnetic field data from the boom-mounted Fluxgate 'FGM' sensors and attitude data from the ('ASC') boom-mounted Star Cameras. The vector data are given both in the satellite-bound sensor ('FGM') system and the Earth Centered Earth Fixed local 'NEC' (North-East-Center) system. The attitude time series, processed and cleaned, are represented by quaternions describing the satellite attitude related to the celestial system. The readings of the scalar OVM (Overhauser) absolute magnetometer at the top of the boom are not supplied directly, but were used during calibration of the vector magnetometer readings. The files with daily time coverage are in the (binary and self-describing) 'CDF' file format and accompanied, beside the generic 'CDF'-format timestamp, by the satellite's geocentric positions and utility information like quality flags.

The full product and format descriptions are provided in the associated Scientific Technical Report - Data (GFZ Section 2.3, 2019. https://doi.org/10.2312/GFZ.b103-19104).

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13 March 2025: addition of Jan Rauberg as co-author
CHAMP (CHAllenging Minisatellite Payload) was a German small satellite mission for geoscientific and atmospheric research and applications, managed by GFZ. With its highly precise, multifunctional and complementary payload elements (Overhauser scalar magnetometer (OVM) and Fluxgate vector magnetometer (FGM), accelerometer, star sensor (ASC), GPS receiver, laser retro reflector, ion drift meter) and its orbit characteristics (near polar, low altitude, long duration) CHAMP generated highly precise gravity and magnetic field measurements simultaneously for the first time and over a 10 years period. CHAMP launched by a Russian COSMOS launch vehicle on July 15, 2000 and an initial altitude of 454 km. The mission ended on September 19 2010 after ten years, two month and four days, or after 58277 orbits.
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