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针对晨昏轨道演化问题,根据不同摄动源对半长轴、偏心率矢量、倾角矢量进行公式推导与演化分析,并重点对降交点地方时漂移进行分析,证明晨昏点的简谐振荡特性向开口向上的抛物线漂移特性转化,最后结合实际的轨道动力学数据进行检验。结果表明,通过准确的入轨控制,可以实现晨昏轨道的降交点地方时十余年的长时间保持,既保障了卫星具有良好光照和能源供给,同时又能应用于长寿命卫星在轨测控与管理的能源预测、轨道数据注入核查等方面。
Aiming at the problem of morning-dawn orbit evolution, the formulas of evolution and derivation of the half-length axis, eccentricity vector and inclination vector are analyzed according to different perturbation sources. The analysis of local time drift of drop point is also carried out. The upward parabolic drift characteristics are transformed and finally tested in conjunction with the actual orbital dynamics data. The results show that the accurate orbit control can be used to maintain the descent point of the evening sun orbit for more than ten years, which not only ensures the satellite has good light and energy supply, but also can be used in long-range satellite in-orbit monitoring and control Management of energy forecasting, orbital data injection verification and so on.