太阳活动对卫星轨道摄动影响仿真

该文分析了高层大气与太阳活动有关的11周年变化、27天变化以及周日变化，讨论了考虑太阳活动的MET模式大气密度计算途径，并且介绍了卫星大气阻力加速度模型。从而，建立起反映太阳活动的太阳10．7cm辐射流量与卫星轨道摄动的关系模型。在此基础上，该文设计出仿真实验方案对该问题进行数值模拟。仿真结果得出了不同太阳活动水平下对同一轨道卫星的长半轴、偏心率影响的衰减曲线。结果还表明，利用计算机数值仿真的方法研究轨道摄动经济、安全、可靠性高，并且符合理论分析结果。

Simulation of Solar Activities' Impact on Satellite Orbit Perturbation

After analyzing the 11-yr, 27 days and diurnal variation of upper atmosphere caused by solar activity, a calculation method for MET model atmosphere density is presented in which solar activity is taken into account. Then the relation model between satellite orbit perturbation and 10.7 cm solar radio flux, which reflects solar activity, is established. Based on these rules, simulation experiment for studying the issues is designed. The experiment result discovers the semi-axis and eccentricity's attenuation of satellites in different sun activity level, and the result also indicates that using the method of computer simulation to study satellite orbit perturbation is economical, reliable, and in accord with the theoretical result.