区域卫星导航系统星座结构演化

Constellation Structure Evolvement of Local Satellite Navigation System

对影响区域卫星导航系统卫星星座结构的各类因素进行了综合分析，用分析法或数值法给出了主要摄动力对卫星轨道影响的计算公式和结果，并得出以下结论：高轨卫星平经度漂移主要是由于地球引力田谐项摄动作用的结果；卫星倾角矢量的漂移主要是由于日月引力和地球带谐项的作用；卫星入轨偏差会引起星座整体结构的紊乱。

All the factors are synthetically analyzed, which impact the constellation structure of local satellite navigation system. Both analytic and numerical formulas to calculate the impaction and their consequent results are explained. The perturbation due to tesseral harmonic terms in the nonspherical gravitational potential mostly arose the excursion of longitude ascending node of high earth orbit satellite. The primary contributions to orbit inclination vector shifting are the third body perturbation of the moon and the sun, and the perturbation due to zonal harmonic terms as well. The satellite launching bias from design status can lead to turbulence of the local area satellite navigation constellation structure.