摄动力对绕飞小行星航天器轨道的影响

绕小行星运行的航天器由于受到摄动力的影响,运行轨迹会偏离二体假设下的圆锥曲线轨道。分析摄动力对航天器轨道的影响是测量控制系统设计的先导。以绕飞谷神星的航天器为例,考虑各种摄动对航天器轨道的影响,建立了非球形摄动力、太阳光压摄动力以及太阳引力摄动力的数学模型,从理论上分析了这些摄动力对航天器绕飞轨道的影响,并仿真验证了理论分析结论,直观描绘了所有摄动作用下小行星的椭圆绕飞轨道。

Research on Orbit of Spacecraft Circling Planetoid Influenced by Dragging Force

Due to the dragging force,trajectories of spacecraft circling planetoid can departure from the standard taper curve orbit which is obtained by the two-body hypothesis.Research on the spacecraft orbit which is influenced by the dragging force is the forerunner of designing the control-system.Mathematic models of dragging force caused by non-spheroid,sunray pressure and the third body such as the sun were established.Orbit of the spacecraft circling the Ceres influenced by these force was emulated on the basis of theoretical analysis.The ellipse orbit affected by the dragging force was described using the imitation data.