求出位系数模型和大气阻力引起的重力梯度卫星的轨道误差；
The orbital errors due to the potential coefficient model and atmospheric drag for the gradiometry satellite are obtained;
分析比较了目前卫星采用姿控的原理和方法，应用现代控制理论分析了重力梯度卫星姿控系统的性。
The application of gravity gradient in the attitude control system of mini-satellites provides an advantaged tool for the development and research of the miniaturization of satellites.
对作用在卫星上的各种空间环境力矩进行了分析，包括重力梯度力矩、太阳光压力矩、气动力矩、剩磁力矩等。
The disturbance torques imparted by space environment are analyzed, which include gravity gradient torque, solar pressure torque, aerodynamic torque and magnetic torque.
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