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环火探测器的摄动分析解对于分析探测器轨道运动规律以及星载计算具有比较重要的意义。针对火星非球形引力摄动影响下环火探测器的运动,采用频率分析方法,对环火探测器轨道运动进行仿真,得到了与KAM理论一致的结果,在火星非球形引力摄动作用下的环火探测器轨道位于一个不变环面,可由3个角变量的频率描述。利用该方法,采用数值方法构建轨道运动的分析表达式,通过与数值积分结果的比对,证明该分析表达式具有较好的精度,适合长时间的轨道外推,可以满足航天任务的星载应用需求。该方法不仅可以给出环火探测器在任意时刻的轨道状态量,同时可以较高精度地确定3个角变量的变化率,反映一定的轨道变化规律。
The perturbation analysis solution of the ring fire detector is of great significance for the analysis of the orbital motion of the detector and on-board calculation. Aiming at the motion of ring fire detector under the influence of non-spherical gravitational perturbation of Mars, the orbital motion of ring fire detector is simulated by frequency analysis method, and the result is consistent with KAM theory. Under the action of non-spherical gravitational perturbation The ring detector’s orbit is located on a constant torus and can be described by the frequency of 3 angular variables. By using this method, the numerical analysis method of orbital motion is constructed. By comparing with numerical integration, it is proved that the analytical expression has good accuracy and is suitable for long-time orbit extrapolation, which can meet the requirements of space mission Application requirements. This method can not only give the orbital state quantity of the ring fire detector at any moment, but also determine the rate of change of the three angular variables with high accuracy and reflect the regularity of the orbit variation.