Method of controlling the attitude and stabilization of a satellite in low orbit
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United States of America Patent
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Jun 8, 2004
Grant Date -
Oct 23, 2003
app pub date -
Apr 23, 2002
filing date -
Apr 23, 2002
priority date (Note) -
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Abstract
For controlling the attitude of a satellite placed on a low earth orbit, components of a vector Bm of the earth's magnetic field along three measurement axes of a frame of reference bound with the satellite (typically by means of a three-axis magnetometer) are measured. The orientation of the earth's magnetic field in the frame of reference is computed and a derivative Bm of the vector is also computed. Magneto-couplers carried by the satellite are energized to create a torque for spinning the satellite at an angular frequency .omega.c about a determined spin axis of the satellite, where .omega.c is greater than an orbital angular frequency 2.omega..sub.0 of the satellite.
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