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立方星是近年来微小卫星领域的研究热点,文章以太阳同步轨道(SSO)立方星任务为例,研究地球非球形引力项J2和大气阻力对立方星轨道演化的影响。分别研究了轨道高度、太阳活动指数F10.7和大气模型对SSO立方星轨道演化的影响,进行了数值仿真验证。研究表明:大气阻力摄动对SSO立方星轨道寿命影响很大,影响结果与轨道高度之间存在非线性关系;太阳活动高、低年时的轨道演化差异明显,且演化量随F10.7的变化是非线性的;不同大气模型下的轨道演化情况存在差异,大多数模型所对应的轨道演化量的量级基本一致。上述影响分析对SSO立方星任务轨道的选定及轨道控制具有一定的参考价值。
The cubic satellite is a research hotspot in the field of micro-satellites in recent years. Taking the SSO cubic satellite mission as an example, the influence of the non-spherical gravity J2 and the atmospheric drag on the orbit evolution of the cubic satellite is studied. The influence of orbital height, solar activity index F10.7 and atmospheric model on the evolution of SSO cubic orbit has been studied respectively. The numerical simulation has been carried out. The results show that the atmospheric resistance perturbation has a great influence on the life of SSO cubic orbit, and there is a nonlinear relationship between the results and the orbit height. The orbital evolution of high and low solar years is obviously different, The changes are nonlinear. The orbital evolution under different atmospheric models is different, and the magnitude of the orbital evolution corresponding to most models is basically the same. The above impact analysis has certain reference value for the selection of SSO cubic orbit and orbit control.