超低轨卫星气动力辅助轨道控制研究

针对超低轨卫星所受气动力显著的特点，提出一种利用气动舵的气动力辅助轨道控制方法。通过分析大气旋转、卫星所处空间位置以及气动舵偏转角度对气动力的影响，对提出的轨道控制方法进行了优化。该方法通过调整气动舵产生连续微小的气动力对卫星轨道进行控制，使各轨道要素均保持在误差容限范围内。将其应用于太阳同步轨道上的对地观测卫星，仿真结果表明，该方法可以在卫星姿态保持三轴对地稳定的前提下，实现轨道保持控制，保证任意纬度下卫星实际位置与标称轨道位置偏差在给定范围内。

Aeroassisted Orbit Control of Very Low Earth Orbit Satellites

An orbit control method is proposed for the Very Low Earth Orbits (VLEOs) satellites by using aerodynamic control panels.By analyzing the effects of the atmosphere rotation, the satellite position, and the angle of panel deflection, the control strategy is optimized based on the different levels of control force provided by the control panels.The satellite orbits are controlled by adjusting the control panels to generate continuous aerodynamic force, so that the orbit elements are kept within the range of error tolerance.An Earth observation satellite operated in a VLEO is investigated and the orbit maintenance is achieved on the premise that the satellite attitude is three-axis stabilized and nadir-pointing.Numerical simulations have demonstrated that the orbit control method ensures that the deviation between the actual position and the nominal position is within the given range at any latitude