地球磁场对带电人造卫星轨道根数的摄动影响

Perturbation Effect of the Earths Magnetic Field on the Orbital Elements of a Charged Satellite

研究了地球磁场对带电的非赤道卫星的轨道根数的摄动影响。理论结果表明 ,地球磁场对带电卫星的轨道半长轴没有摄动影响 ,既无周期摄动 ,也无长期摄动 ,但对轨道偏心率、轨道倾角、升交点赤经、近地点经度和历元平近点角均有周期摄动 ,且对升交点和近地点经度还有长期摄动效应。通过算例表明 ,当卫星带有大量电荷时 。

The perturbation effect of the earths magnetic field on the orbital elements of a charged satellite is further studied.The three orthogonal perturbation components,S.T.W and the perturbation variables of the orbital elements are derived.The results of this study show clearly that this effect results in both the secular and periodic variation of the argument of the perigee and the longitudes of the ascending node.However,the Other orbital elements exhibit no secular,but only periodic variation.The perturbation effect of the Earths magnetic field on the orbital elements of a charged Satellite is estimated.It can be shown that this effect must be considered if a satellite brings much charge in the Earths magnetic field.