Author:
Olsen Nils,Albini Giuseppe,Bouffard Jerome,Parrinello Tommaso,Tøffner-Clausen Lars
Abstract
AbstractWe 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).
Publisher
Springer Science and Business Media LLC
Subject
Space and Planetary Science,Geology
Reference25 articles.
1. Alken P, Olsen N, Finlay CC (2020) Co-estimation of geomagnetic field and in-orbit fluxgate magnetometer calibration parameters. Earth Planets Space 72:49. https://doi.org/10.1186/s40623-020-01163-9
2. Brauer P, Merayo JMG, Nielsen OV, Primdahl F, Petersen JR (1997) Transverse field effect in fluxgate sensors. Sens Actuators A Phys 59(1–3):70–74. https://doi.org/10.1016/s0924-4247(97)01416-7
3. Emmert JT, Richmond AD, Drob DP (2010) A computationally compact representation of magnetic-apex and quasi-dipole coordinates with smooth base vectors. J Geophys Res 115(A8):A08322. https://doi.org/10.1029/2010JA015326
4. Finlay CC, Olsen N, Kotsiaros S, Gillet N, Tøffner-Clausen L (2016) Recent geomagnetic secular variation from Swarm and ground observatories as estimated in the CHAOS-6 geomagnetic field model. Earth Planets Space 68(1):112. https://doi.org/10.1186/s40623-016-0486-1
5. Friis-Christensen E, Lühr H, Hulot G (2002) Swarm—a constellation to study the dynamics of the earth’s magnetic field and its interactions with the earth system, DSRI Report 1/2002. Danish Space Research Institute, Copenhagen
Cited by
33 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献