Results 151 to 160 of about 3,462,857 (219)

Magnetic anomalies from satellite magnetometer

Journal of Geophysical Research, 1970
Proton magnetometer measurements from satellite Cosmos 49, observing residual and broad magnetic ...
Isidore Zietz, Gordon E. Andreasen, Joseph C. Cain   +2 more
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Magnetic signatures for satellite anomalies

Journal of Spacecraft and Rockets, 1991
Similarities have been found between the yearly trends of magnetic activity and the occurrences of electrostatic discharge events on a geosynchronous communication satellite from April 1983 to December 1987 in the declining portion of the 11-year solar cycle.
Hing-Lan Lam, Jaroslava Hruska
openaire   +1 more source

Analysis of Satellite Magnetic Data

Exploration Geophysics, 2005
Night-time measurements of the Earth?s undisturbed, quiet magnetic field at satellite altitudes provide models of the main field and its secular variation, and of the crustal magnetic anomaly field. Fields from the regular daily variations of solar and lunar origin are most pronounced in daytime data and can affect aeromagnetic and ground magnetic ...
Jon Turner, Denis Winch, David Ivers, Robert Stening   +3 more
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Magnetic control of satellite attitude

IEEE Transactions on Communication and Electronics, 1964
Advantages and disadvantages of controlling magnetization in ferromagnetic material to produce torques required for satellite attitude ...
G. E. Lynn, J. G. Hurt, K. A. Harriger
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Earth's magnetic field models for dumping momentum magnetically on GPS satellites

Astrodynamics Conference, 1980
This paper discusses the relative performance of various Earth magnetic field models in a system for using onboard electromagnets to dump unwanted reaction wheel momentum on Global Positioning System satellites. The system uses the interaction between the Earth's magnetic field and the satellite's electromagnetically induced field to control the ...
Thomas J. Eller, David A. Wagie
openaire   +1 more source

Magnetic attitude control of a spinning satellite

1st Annual Meeting, 1964
Design of a self-contained magnetic attitude control system for a spinning satellite is described, and particular control techniques for sensing and actuation are developed. A specific control problem associated with the alignment of spin axis normal to the orbit plane in the presence of external perturbations is examined in detail, and a simple ...
E. I. ERGIN, P. C. WHEELER
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Autonomous Satellite Navigation Using Magnetic Measurements

2006 1st International Symposium on Systems and Control in Aerospace and Astronautics, 2006
An unscented Kalman filter (UKF), which is a kind of new style filter based on unscented transform, has been used to estimate spacecraft orbit with real magnetometer. In order to simulate the measurements, this paper has established the high-accuracy dynamic model of the orbit and the 10th-order model of the geomagnetic field. Two navigation algorithms
null Changsheng Gao, null Wuxing Jing
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Magnetic Satellite Missions and Data

2010
Although the first satellite observations of the Earth’s magnetic field were already taken more than 50 years ago, continuous geomagnetic measurements from space are only available since 1999. The unprecedented time-space coverage of this recent data set opened revolutionary new possibilities for exploring the Earth’s magnetic field from space.
Nils Olsen, Stavros Kotsiaros
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The satellite layout optimization design approach for minimizing the residual magnetic flux density of micro- and nano-satellites

Acta Astronautica, 2019
With the rapid development of space technology, more and more complex micro- and nano-satellite missions have been proposed for more sophisticated objectives such as remote sensing and space astronomy.
Xianqi Chen, Shucai Liu, Tao Sheng, Yong Zhao, Wen Yao   +4 more
semanticscholar   +1 more source

Minimal crustal magnetizations from satellite data

Physics of the Earth and Planetary Interiors, 1996
Abstract The minimum amplitude crustal magnetization needed to explain Magsat vector anomaly data is found using harmonic splines as basis functions (Shure et al., 1982, Phys. Earth Planet. Inter., 28: 215–229), and choosing a subset of the original basis (Parker and Shure, 1982, Geophys. Res. Lett., 9: 812–815) to represent magnetization. We suggest
K.A. Whaler, R.A. Langel
openaire   +1 more source