晨昏轨道摄动特性分析

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.

Perturbation Analysis for Dawn-Dusk Orbit

With respect to the evolution of dawn-dusk orbit belonging to sun synchronous orbit, based on different perturbation sources, major semi-axis, eccentricity vector and inclination vector have been analyzed in evolution by formula conducting with the important aim to local time of descending node shifting that has proved to possess parabola characteristics having positive acceleration and originated form amplitude resonance characteristics. With orbit dynamics data from a dawn-dusk satellite running normally over 10 years, it has shown that a dawn-dusk orbit can obtain more than a decade years of longevity with precisely controlled launching trajectory to get better orbital sunlight and solar energy input, and has an engineering use in Tracking, Telemetry and Command(TT&C) for energy prediction in power supply and data check in injection orbit and so on