Results 31 to 40 of about 7,951 (302)

Error model of geomagnetic-field measurement and extended Kalman-filter based compensation method. [PDF]

PLoS ONE, 2017
The real-time accurate measurement of the geomagnetic-field is the foundation to achieving high-precision geomagnetic navigation. The existing geomagnetic-field measurement models are essentially simplified models that cannot accurately describe the ...
Zhilei Ge, Suyun Liu, Guopeng Li, Yan Huang, Yanni Wang   +4 more
doaj   +1 more source

Co-estimation of geomagnetic field and in-orbit fluxgate magnetometer calibration parameters

Earth, Planets and Space, 2020
For the past 20 years, state of the art geomagnetic core field models have relied heavily on magnetic measurements made from space-based instrumentation.
Patrick Alken, Nils Olsen, Christopher C. Finlay   +2 more
doaj   +1 more source

Study on Long-Term Variation Characteristics of Geomagnetic Cutoff Rigidities of Energetic Protons Caused by Long-Term Variation of Geomagnetic Field

Frontiers in Earth Science, 2022
As a parameter that quantitatively measures the shielding effect of the Earth’s magnetic field on energetic particles, the geomagnetic cutoff rigidities will change significantly with the long-term change of geomagnetic field.
Wei Chu, Yanyan Yang, Song Xu, Gang Qin , Jianping Huang, Zhima Zeren, Xuhui Shen   +6 more
doaj   +1 more source

Geomagnetic main field modeling with DMSP [PDF]

Journal of Geophysical Research: Space Physics, 2014
AbstractThe Defense Meteorological Satellite Program (DMSP) launches and maintains a network of satellites to monitor the meteorological, oceanographic, and solar‐terrestrial physics environments. In the past decade, geomagnetic field modelers have focused much attention on magnetic measurements from missions such as CHAMP, Ørsted, and SAC‐C.
Alken, P., Maus, S., Lühr, H., Redmon, R., Rich, F., Bowman, B., O'Malley, S.   +6 more
openaire   +3 more sources

Using improved Swarm’s experimental absolute vector mode data to produce a candidate Definitive Geomagnetic Reference Field (DGRF) 2015.0 model

Earth, Planets and Space, 2021
We describe the way a global model of the geomagnetic field has been built using vector field data acquired by the absolute scalar magnetometers (ASM) running in vector mode on board the Alpha and Bravo satellites of the European Space Agency (ESA) Swarm
Pierre Vigneron, Gauthier Hulot, Jean-Michel Léger, Thomas Jager   +3 more
doaj   +1 more source

Comparison of eight years magnetic field data from Cluster with Tsyganenko models in the inner magnetosphere [PDF]

, 2010
Eight years of magnetic field data, taken while the four Cluster spacecraft pass through, or adjacent to, the equatorial ring current, have been surveyed to investigate the effects on the Earth's magnetic field of the externally driven current systems
Holme R, Dunlop MW, Dunlop, M.W., Woodfield, E.E., Woodfield EE, M. W. Dunlop, Holme, R., Q.-H. Zhang, E. E. Woodfield, R. Holme, Zhang QH, Zhang, Q.-H.   +11 more
core   +1 more source

Modeling of the Sq geomagnetic field induced by tidal oscillations of the atmosphere

Earth and Planetary Physics
The Sq (solar quiet) geomagnetic field is generated by the electric currents in the E-region of the ionosphere, driven by the atmospheric tides. It is a critical part of high-precision geomagnetic field modeling.
WenBo Li, DaLi Kong, HongBo Yao, Hao Yan
doaj   +1 more source

Analytic Calculation of Geoelectric Fields Due to Geomagnetic Disturbances: A Test Case

IEEE Access, 2019
Geomagnetic field variations produce geoelectric fields that can affect the operation of technological networks at the Earth's surface, including power systems, pipelines, phone cables and railway circuits.
David H. Boteler, Risto J. Pirjola, Luis Marti   +2 more
doaj   +1 more source

Modelling the geomagnetic field.

Journal of geomagnetism and geoelectricity, 1990
Spherical harmonic models of the main geomagnetic field and its secular variation are used by navigators, exploration geophysicists, drillers of oil wells and by scientists studying the Earth's interior, its ionosphere and magnetosphere. The data on which such models are based must be of the highest quality and must be distributed as homogeneously as ...
openaire   +2 more sources

Multi-instrument observations of a large scale pc4 pulsation [PDF]

, 2008
On 7 November 2005 various ground based and spaced based instruments registered five wave packets with frequencies in the Pc4 range. The most prominent of the five wave packets was observed in ground based magnetometer data spanning almost all ...
Tim K. Yeoman (7583066), Clausen, L.B.N., Clausen, L. B. N., L. B. N. Clausen (7594130), Lucek, E. A., R. Behlke, R. Behlke (7594133), T. K. Yeoman, E. A. Lucek, Behlke, R., Behlke, Rico, E. A. Lucek (7594136), Lucek, E.A., Yeoman, T. K., Yeoman, T.K., L. B. N. Clausen   +15 more
core   +1 more source