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Method for determining the earth's magnetic field and a satellite's attitude for attitude control
Method for determining the earth's magnetic field and a satellite's attitude for attitude control
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机译：确定地球磁场和卫星姿态的姿态控制方法
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摘要
A method for determining the earth's magnetic field and, selectively, additionally, for determining a satellite orientation as a premise for the attitude control of an earth satellite in a known orbit. The satellite is equipped with magnetic coils 5, 6, and 7, gyros, sun sensors and reaction and/or flywheels 1, 2, 3, 4. The x-axis of a coordinate system integral with the satellite is continuously oriented towards the sun. The satellite can be rotated through a variable angle of rotation . alpha. around the x-axis. At three instants t.sub.0, t.sub.1, t.sub.2, spaced from each other by small time intervals, respective angular momentum components H.sub.y, H.sub.z are measured. Herein, a constant magnetic moment M.sub.x is generated throughout the second time interval. From these domains, the components of the earth's magnetic field B.sub.y, B.sub.z are calculated for t.sub.0. From this, subsequently, the angle of rotation can be determined. The components of the angular momentum result from the rpm's of the reaction and/or flywheels, as well as gyros.
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