【摘要】 利用GSFC/NASA/USA的GEODYNⅡ软件,并引入JPL/NASA/USA最新的165×165阶次的月球重力场模型LP165P,通过对该模型进行截断,仿真计算了不同阶次的月球重力场模型对轨道演化的影响,在相同的重力场模型下,计算了不同轨道高度、不同倾角和不同轨道偏心率的轨道演化情况。大量的仿真计算表明,高倾角、圆轨道的中低轨(150 km或200 km)绕月飞行器具有相对稳定的轨道演化特征,在不进行任何调整的情况下,其轨道持续运行时间超过1 a。同时计算表明,轨道积分过程中可以截断月球重力场模型至100阶次而不损失精度。更多还原

【Abstract】 By using of GEODYNⅡ from GSFC/NASA/USA and newly lunar gravity model LP165P from JPL/NASA/USA,the effects on the orbit revolutionary from different models by truncation to some degree and order are simulated and computed,the orbit revolutionary and analysis of orbital lifetime under different height,inclination and ellipticity with same lunar gravity model are computed.The results show that high inclination circular high orbit(150 km or 200 km) has better performance,with its orbit lasting more than one year without(alignment,) and its orbit can be computed with gravity model truncated in degree and order 100 without losing its accuracy.更多还原