The attitude motion equation of satellite was given, and the attitude of magnetic control for gravity gradient satellite would go to stable.
给出了卫星姿态运动方程，并证明采用两种方法控制卫星姿态的稳定性。
Gravity gradient is the second order derivative of gravitational potential, which can be observed by satellite gradiometer.
重力梯度为重力位的二阶导数，可以通过星载梯度仪进行观测。
Gravity gradient is the second order derivative of gravitational potential, which can be observed by satellite gradiometer.
重力梯度为重力位的二阶导数，可以通过星载梯度仪进行观测。
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