文章基本信息

标题：Magnetic observations from CryoSat-2: calibration and processing of satellite platform magnetometer data
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作者：Nils Olsen ; Giuseppe Albini ; Jerome Bouffard 等
期刊名称：Earth, Planets and Space
电子版ISSN：1880-5981
出版年度：2020
卷号：72
期号：1
页码：1-18
DOI：10.1186/s40623-020-01171-9
出版社：Springer Verlag
摘要：We describe and discuss the preprocessing and calibration steps applied to the magnetic data measured by the three “platform magnetometers” on-board the CryoSat-2 satellite. The calibration is performed by comparing the magnetometer sensor readings with magnetic field values for the time and position of the satellite as given by the CHAOS-6 geomagnetic field model. We allow for slow temporal variations of the calibration parameters by solving for scale values, offsets, and non-orthogonalities in monthly bins, and account for non-linearities as well as the magnetic disturbances caused by battery, solar panel and magnetorquer currents. Fully calibrated magnetic vector data, together with time and position, are provided as daily files in CDF data format at swarm-diss.eo.esa.int. The data show good agreement with Swarm satellite magnetic measurements during close encounters (rms difference between 1 and 5 nT for inter-satellite distances below 300 km).
关键词：Geomagnetism; Magnetic satellites; Magnetometer calibration; CryoSat-2