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.